64652980 has 48 divisors (see below), whose sum is σ = 160183296. Its totient is φ = 21450240.

The previous prime is 64652971. The next prime is 64652981. The reversal of 64652980 is 8925646.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64652981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3109 + ... + 11788.

It is an arithmetic number, because the mean of its divisors is an integer number (3337152).

Almost surely, 2^64652980 is an apocalyptic number.

It is an amenable number.

64652980 is an abundant number, since it is smaller than the sum of its proper divisors (95530316).

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

64652980 is a wasteful number, since it uses less digits than its factorization.

64652980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14944 (or 14942 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 64652980 is about 8040.7076802978. The cubic root of 64652980 is about 401.3557744969.

The spelling of 64652980 in words is "sixty-four million, six hundred fifty-two thousand, nine hundred eighty".