64976744 has 48 divisors (see below), whose sum is σ = 146321280. Its totient is φ = 26943840.

The previous prime is 64976729. The next prime is 64976777. The reversal of 64976744 is 44767946.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9479 + ... + 14825.

It is an arithmetic number, because the mean of its divisors is an integer number (3048360).

Almost surely, 2^64976744 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 64976744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73160640).

64976744 is an abundant number, since it is smaller than the sum of its proper divisors (81344536).

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

64976744 is a wasteful number, since it uses less digits than its factorization.

64976744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5398 (or 5387 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 47.

The square root of 64976744 is about 8060.8153433756. The cubic root of 64976744 is about 402.0246183450.

The spelling of 64976744 in words is "sixty-four million, nine hundred seventy-six thousand, seven hundred forty-four".