64664696 has 8 divisors (see below), whose sum is σ = 121246320. Its totient is φ = 32332344.

The previous prime is 64664687. The next prime is 64664711. The reversal of 64664696 is 69646646.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 64664696.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4041536 + ... + 4041551.

It is an arithmetic number, because the mean of its divisors is an integer number (15155790).

Almost surely, 2^64664696 is an apocalyptic number.

It is an amenable number.

64664696 is a deficient number, since it is larger than the sum of its proper divisors (56581624).

64664696 is a wasteful number, since it uses less digits than its factorization.

64664696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8083093 (or 8083089 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 47.

The square root of 64664696 is about 8041.4361901342. The cubic root of 64664696 is about 401.3800167425.

The spelling of 64664696 in words is "sixty-four million, six hundred sixty-four thousand, six hundred ninety-six".