64650870 has 24 divisors (see below), whose sum is σ = 168092496. Its totient is φ = 17240208.

The previous prime is 64650857. The next prime is 64650893. The reversal of 64650870 is 7805646.

It is a happy number.

64650870 is a `hidden beast` number, since 646 + 5 + 0 + 8 + 7 + 0 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 359082 + ... + 359261.

It is an arithmetic number, because the mean of its divisors is an integer number (7003854).

Almost surely, 2^64650870 is an apocalyptic number.

64650870 is an abundant number, since it is smaller than the sum of its proper divisors (103441626).

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

64650870 is a wasteful number, since it uses less digits than its factorization.

64650870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718356 (or 718353 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 64650870 is about 8040.5764718707. The cubic root of 64650870 is about 401.3514082641.

The spelling of 64650870 in words is "sixty-four million, six hundred fifty thousand, eight hundred seventy".