64858768 has 20 divisors (see below), whose sum is σ = 135330748. Its totient is φ = 29934720.

The previous prime is 64858733. The next prime is 64858771. The reversal of 64858768 is 86785846.

It can be written as a sum of positive squares in 2 ways, for example, as 13191424 + 51667344 = 3632^2 + 7188^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155703 + ... + 156118.

Almost surely, 2^64858768 is an apocalyptic number.

It is an amenable number.

64858768 is an abundant number, since it is smaller than the sum of its proper divisors (70471980).

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

64858768 is a wasteful number, since it uses less digits than its factorization.

64858768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311842 (or 311836 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 52.

The square root of 64858768 is about 8053.4941485047. The cubic root of 64858768 is about 401.7811569276.

The spelling of 64858768 in words is "sixty-four million, eight hundred fifty-eight thousand, seven hundred sixty-eight".