64257508 has 12 divisors (see below), whose sum is σ = 128515072. Its totient is φ = 27538920.

The previous prime is 64257503. The next prime is 64257509. The reversal of 64257508 is 80575246.

It is a happy number.

64257508 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (64257503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1147428 + ... + 1147483.

Almost surely, 2^64257508 is an apocalyptic number.

It is an amenable number.

64257508 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64257508 is a wasteful number, since it uses less digits than its factorization.

64257508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294922 (or 2294920 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 64257508 is about 8016.0780934320. The cubic root of 64257508 is about 400.5357570905.

The spelling of 64257508 in words is "sixty-four million, two hundred fifty-seven thousand, five hundred eight".