64395996 has 36 divisors (see below), whose sum is σ = 174790728. Its totient is φ = 18398688.

The previous prime is 64395977. The next prime is 64396019. The reversal of 64395996 is 69959346.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54171 + ... + 55346.

It is an arithmetic number, because the mean of its divisors is an integer number (4855298).

Almost surely, 2^64395996 is an apocalyptic number.

It is an amenable number.

64395996 is an abundant number, since it is smaller than the sum of its proper divisors (110394732).

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

64395996 is a wasteful number, since it uses less digits than its factorization.

64395996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109538 (or 109529 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 51.

The square root of 64395996 is about 8024.7115836022. The cubic root of 64395996 is about 400.8232959635.

The spelling of 64395996 in words is "sixty-four million, three hundred ninety-five thousand, nine hundred ninety-six".