64657808 has 20 divisors (see below), whose sum is σ = 125432448. Its totient is φ = 32288160.

The previous prime is 64657799. The next prime is 64657811. The reversal of 64657808 is 80875646.

64657808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13673 + ... + 17783.

Almost surely, 2^64657808 is an apocalyptic number.

It is an amenable number.

64657808 is a deficient number, since it is larger than the sum of its proper divisors (60774640).

64657808 is a wasteful number, since it uses less digits than its factorization.

64657808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5102 (or 5096 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 64657808 is about 8041.0078970239. The cubic root of 64657808 is about 401.3657647425.

The spelling of 64657808 in words is "sixty-four million, six hundred fifty-seven thousand, eight hundred eight".