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65419285 = 513083857
BaseRepresentation
bin1111100110001…
…1100000010101
311120002122101111
43321203200111
5113221404120
610254055021
71423024531
oct371434025
9146078344
1065419285
1133a22528
1219aaa471
1310726849
14898cbc1
155b2375a
hex3e63815

65419285 has 4 divisors (see below), whose sum is σ = 78503148. Its totient is φ = 52335424.

The previous prime is 65419283. The next prime is 65419301. The reversal of 65419285 is 58291456.

65419285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7064964 + 58354321 = 2658^2 + 7639^2 .

It is a cyclic number.

It is not a de Polignac number, because 65419285 - 21 = 65419283 is a prime.

It is a super-2 number, since 2×654192852 = 8559365699822450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65419283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6541924 + ... + 6541933.

It is an arithmetic number, because the mean of its divisors is an integer number (19625787).

Almost surely, 265419285 is an apocalyptic number.

It is an amenable number.

65419285 is a deficient number, since it is larger than the sum of its proper divisors (13083863).

65419285 is a wasteful number, since it uses less digits than its factorization.

65419285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13083862.

The product of its digits is 86400, while the sum is 40.

The square root of 65419285 is about 8088.2189015877. The cubic root of 65419285 is about 402.9352518061.

The spelling of 65419285 in words is "sixty-five million, four hundred nineteen thousand, two hundred eighty-five".

Divisors: 1 5 13083857 65419285