64625868 has 36 divisors (see below), whose sum is σ = 166447008. Its totient is φ = 21134880.

The previous prime is 64625867. The next prime is 64625879. The reversal of 64625868 is 86852646.

64625868 is a `hidden beast` number, since 6 + 4 + 62 + 586 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (64625863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15028 + ... + 18843.

It is an arithmetic number, because the mean of its divisors is an integer number (4623528).

Almost surely, 2^64625868 is an apocalyptic number.

It is an amenable number.

64625868 is an abundant number, since it is smaller than the sum of its proper divisors (101821140).

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

64625868 is a wasteful number, since it uses less digits than its factorization.

64625868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33934 (or 33929 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 64625868 is about 8039.0215822574. The cubic root of 64625868 is about 401.2996642751.

The spelling of 64625868 in words is "sixty-four million, six hundred twenty-five thousand, eight hundred sixty-eight".