64684625 has 32 divisors (see below), whose sum is σ = 85363200. Its totient is φ = 48840000.

The previous prime is 64684619. The next prime is 64684651. The reversal of 64684625 is 52648646.

It is not a de Polignac number, because 64684625 - 2⁶ = 64684561 is a prime.

It is a super-2 number, since 2×64684625² = 8368201422781250, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 428300 + ... + 428450.

It is an arithmetic number, because the mean of its divisors is an integer number (2667600).

Almost surely, 2^64684625 is an apocalyptic number.

It is an amenable number.

64684625 is a deficient number, since it is larger than the sum of its proper divisors (20678575).

64684625 is a wasteful number, since it uses less digits than its factorization.

64684625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 328 counting only the distinct ones).

The product of its digits is 276480, while the sum is 41.

The square root of 64684625 is about 8042.6752389985. The cubic root of 64684625 is about 401.4212462502.

The spelling of 64684625 in words is "sixty-four million, six hundred eighty-four thousand, six hundred twenty-five".