64980456 has 32 divisors (see below), whose sum is σ = 171002400. Its totient is φ = 20520000.

The previous prime is 64980431. The next prime is 64980457. The reversal of 64980456 is 65408946.

It is not an unprimeable number, because it can be changed into a prime (64980457) 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, 70795 + ... + 71706.

It is an arithmetic number, because the mean of its divisors is an integer number (5343825).

Almost surely, 2^64980456 is an apocalyptic number.

It is an amenable number.

64980456 is an abundant number, since it is smaller than the sum of its proper divisors (106021944).

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

64980456 is a wasteful number, since it uses less digits than its factorization.

64980456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142529 (or 142525 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 64980456 is about 8061.0455897483. The cubic root of 64980456 is about 402.0322738377.

The spelling of 64980456 in words is "sixty-four million, nine hundred eighty thousand, four hundred fifty-six".