64657896 has 32 divisors (see below), whose sum is σ = 165406560. Its totient is φ = 21051072.

The previous prime is 64657889. The next prime is 64657903. The reversal of 64657896 is 69875646.

It is an interprime number because it is at equal distance from previous prime (64657889) and next prime (64657903).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30295 + ... + 32358.

It is an arithmetic number, because the mean of its divisors is an integer number (5168955).

Almost surely, 2^64657896 is an apocalyptic number.

It is an amenable number.

64657896 is an abundant number, since it is smaller than the sum of its proper divisors (100748664).

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

64657896 is a wasteful number, since it uses less digits than its factorization.

64657896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62705 (or 62701 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 51.

The square root of 64657896 is about 8041.0133689728. The cubic root of 64657896 is about 401.3659468302.

The spelling of 64657896 in words is "sixty-four million, six hundred fifty-seven thousand, eight hundred ninety-six".