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64886941 = 79269563
BaseRepresentation
bin1111011110000…
…1100010011101
311112002121011001
43313201202131
5113102340231
610234430301
71415346520
oct367414235
9145077131
1064886941
1133699579
1219892391
131059b452
148890bb7
155a6ab61
hex3de189d

64886941 has 4 divisors (see below), whose sum is σ = 74156512. Its totient is φ = 55617372.

The previous prime is 64886897. The next prime is 64886947. The reversal of 64886941 is 14968846.

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 64886941 - 223 = 56498333 is a prime.

It is a super-2 number, since 2×648869412 = 8420630224674962, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64886891 and 64886900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64886947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4634775 + ... + 4634788.

It is an arithmetic number, because the mean of its divisors is an integer number (18539128).

Almost surely, 264886941 is an apocalyptic number.

It is an amenable number.

64886941 is a deficient number, since it is larger than the sum of its proper divisors (9269571).

64886941 is an equidigital number, since it uses as much as digits as its factorization.

64886941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9269570.

The product of its digits is 331776, while the sum is 46.

The square root of 64886941 is about 8055.2430751654. The cubic root of 64886941 is about 401.8393230133.

The spelling of 64886941 in words is "sixty-four million, eight hundred eighty-six thousand, nine hundred forty-one".

Divisors: 1 7 9269563 64886941