64939056 has 80 divisors (see below), whose sum is σ = 206486784. Its totient is φ = 17125632.

The previous prime is 64939019. The next prime is 64939067. The reversal of 64939056 is 65093946.

It is a super-2 number, since 2×64939056² = 8434161988342272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 64938999 and 64939017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3066 + ... + 11801.

Almost surely, 2^64939056 is an apocalyptic number.

It is an amenable number.

64939056 is an abundant number, since it is smaller than the sum of its proper divisors (141547728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64939056 is a wasteful number, since it uses less digits than its factorization.

64939056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14898 (or 14892 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 64939056 is about 8058.4772755155. The cubic root of 64939056 is about 401.9468754828.

The spelling of 64939056 in words is "sixty-four million, nine hundred thirty-nine thousand, fifty-six".