64942976 has 32 divisors (see below), whose sum is σ = 147863280. Its totient is φ = 27832320.

The previous prime is 64942957. The next prime is 64943003. The reversal of 64942976 is 67924946.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 64942976.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35345 + ... + 37136.

Almost surely, 2^64942976 is an apocalyptic number.

It is an amenable number.

64942976 is an abundant number, since it is smaller than the sum of its proper divisors (82920304).

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

64942976 is an equidigital number, since it uses as much as digits as its factorization.

64942976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72502 (or 72490 counting only the distinct ones).

The product of its digits is 653184, while the sum is 47.

The square root of 64942976 is about 8058.7204939742. The cubic root of 64942976 is about 401.9549630660.

The spelling of 64942976 in words is "sixty-four million, nine hundred forty-two thousand, nine hundred seventy-six".