64857968 has 30 divisors (see below), whose sum is σ = 146180376. Its totient is φ = 27795936.

The previous prime is 64857959. The next prime is 64857971. The reversal of 64857968 is 86975846.

It is a nialpdrome in base 14.

It is a zygodrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40580 + ... + 42147.

Almost surely, 2^64857968 is an apocalyptic number.

It is an amenable number.

64857968 is an abundant number, since it is smaller than the sum of its proper divisors (81322408).

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

64857968 is a wasteful number, since it uses less digits than its factorization.

64857968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82749 (or 82736 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 53.

The square root of 64857968 is about 8053.4444804692. Note that the first 4 decimals coincide. The cubic root of 64857968 is about 401.7795049985.

The spelling of 64857968 in words is "sixty-four million, eight hundred fifty-seven thousand, nine hundred sixty-eight".