64838980 has 24 divisors (see below), whose sum is σ = 140555520. Its totient is φ = 25098720.

The previous prime is 64838927. The next prime is 64839017. The reversal of 64838980 is 8983846.

It is a self number, because there is not a number n which added to its sum of digits gives 64838980.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51670 + ... + 52909.

It is an arithmetic number, because the mean of its divisors is an integer number (5856480).

Almost surely, 2^64838980 is an apocalyptic number.

It is an amenable number.

64838980 is an abundant number, since it is smaller than the sum of its proper divisors (75716540).

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

64838980 is a wasteful number, since it uses less digits than its factorization.

64838980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104619 (or 104617 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 64838980 is about 8052.2655197156. The cubic root of 64838980 is about 401.7402924747.

The spelling of 64838980 in words is "sixty-four million, eight hundred thirty-eight thousand, nine hundred eighty".