64650568 has 32 divisors (see below), whose sum is σ = 124790400. Its totient is φ = 31384512.

The previous prime is 64650533. The next prime is 64650569. The reversal of 64650568 is 86505646.

It is a self number, because there is not a number n which added to its sum of digits gives 64650568.

It is not an unprimeable number, because it can be changed into a prime (64650569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51646 + ... + 52882.

It is an arithmetic number, because the mean of its divisors is an integer number (3899700).

Almost surely, 2^64650568 is an apocalyptic number.

It is an amenable number.

64650568 is a deficient number, since it is larger than the sum of its proper divisors (60139832).

64650568 is a wasteful number, since it uses less digits than its factorization.

64650568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429 (or 1425 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 64650568 is about 8040.5576921007. The cubic root of 64650568 is about 401.3507833263.

The spelling of 64650568 in words is "sixty-four million, six hundred fifty thousand, five hundred sixty-eight".