64972704 has 96 divisors (see below), whose sum is σ = 181440000. Its totient is φ = 20300544.

The previous prime is 64972679. The next prime is 64972711. The reversal of 64972704 is 40727946.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326397 + ... + 326595.

It is an arithmetic number, because the mean of its divisors is an integer number (1890000).

Almost surely, 2^64972704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64972704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90720000).

64972704 is an abundant number, since it is smaller than the sum of its proper divisors (116467296).

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

64972704 is a wasteful number, since it uses less digits than its factorization.

64972704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 64972704 is about 8060.5647444829. The cubic root of 64972704 is about 402.0162860658.

The spelling of 64972704 in words is "sixty-four million, nine hundred seventy-two thousand, seven hundred four".