64625928 has 16 divisors (see below), whose sum is σ = 161564880. Its totient is φ = 21541968.

The previous prime is 64625927. The next prime is 64625941. The reversal of 64625928 is 82952646.

It is a super-2 number, since 2×64625928² = 8353021139722368, 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 self number, because there is not a number n which added to its sum of digits gives 64625928.

It is not an unprimeable number, because it can be changed into a prime (64625923) 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, 1346350 + ... + 1346397.

It is an arithmetic number, because the mean of its divisors is an integer number (10097805).

Almost surely, 2^64625928 is an apocalyptic number.

It is an amenable number.

64625928 is an abundant number, since it is smaller than the sum of its proper divisors (96938952).

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

64625928 is a wasteful number, since it uses less digits than its factorization.

64625928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2692756 (or 2692752 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 64625928 is about 8039.0253140539. The cubic root of 64625928 is about 401.2997884667.

The spelling of 64625928 in words is "sixty-four million, six hundred twenty-five thousand, nine hundred twenty-eight".