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64681301 = 193404279
BaseRepresentation
bin1111011010111…
…1010101010101
311111201011001202
43312233111111
5113024300201
610230202245
71413532136
oct366572525
9144634052
1064681301
1133569023
12197b3385
1310528979
148839c8d
155a29c6b
hex3daf555

64681301 has 4 divisors (see below), whose sum is σ = 68085600. Its totient is φ = 61277004.

The previous prime is 64681261. The next prime is 64681307. The reversal of 64681301 is 10318646.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64681301 - 210 = 64680277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64681307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1702121 + ... + 1702158.

It is an arithmetic number, because the mean of its divisors is an integer number (17021400).

Almost surely, 264681301 is an apocalyptic number.

It is an amenable number.

64681301 is a deficient number, since it is larger than the sum of its proper divisors (3404299).

64681301 is a wasteful number, since it uses less digits than its factorization.

64681301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404298.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 64681301 is about 8042.4685886859. The cubic root of 64681301 is about 401.4143700820.

Adding to 64681301 its reverse (10318646), we get a palindrome (74999947).

The spelling of 64681301 in words is "sixty-four million, six hundred eighty-one thousand, three hundred one".

Divisors: 1 19 3404279 64681301