64635696 has 30 divisors (see below), whose sum is σ = 180890580. Its totient is φ = 21545184.

The previous prime is 64635691. The next prime is 64635719. The reversal of 64635696 is 69653646.

64635696 is a `hidden beast` number, since 6 + 4 + 635 + 6 + 9 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (64635691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 224286 + ... + 224573.

It is an arithmetic number, because the mean of its divisors is an integer number (6029686).

Almost surely, 2^64635696 is an apocalyptic number.

It is an amenable number.

64635696 is an abundant number, since it is smaller than the sum of its proper divisors (116254884).

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

64635696 is a wasteful number, since it uses less digits than its factorization.

64635696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448873 (or 448864 counting only the distinct ones).

The product of its digits is 699840, while the sum is 45.

The square root of 64635696 is about 8039.6328274368. The cubic root of 64635696 is about 401.3200058365.

The spelling of 64635696 in words is "sixty-four million, six hundred thirty-five thousand, six hundred ninety-six".