64918568 has 32 divisors (see below), whose sum is σ = 143004960. Its totient is φ = 27238080.

The previous prime is 64918543. The next prime is 64918583. The reversal of 64918568 is 86581946.

64918568 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 7 ways as a sum of consecutive naturals, for example, 27230 + ... + 29517.

It is an arithmetic number, because the mean of its divisors is an integer number (4468905).

Almost surely, 2^64918568 is an apocalyptic number.

It is an amenable number.

64918568 is an abundant number, since it is smaller than the sum of its proper divisors (78086392).

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

64918568 is a wasteful number, since it uses less digits than its factorization.

64918568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56777 (or 56773 counting only the distinct ones).

The product of its digits is 414720, while the sum is 47.

The square root of 64918568 is about 8057.2059673314. The cubic root of 64918568 is about 401.9046001850.

The spelling of 64918568 in words is "sixty-four million, nine hundred eighteen thousand, five hundred sixty-eight".