64874992 has 80 divisors (see below), whose sum is σ = 163864512. Its totient is φ = 24145920.

The previous prime is 64874977. The next prime is 64875017. The reversal of 64874992 is 29947846.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23442 + ... + 26062.

Almost surely, 2^64874992 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 64874992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81932256).

64874992 is an abundant number, since it is smaller than the sum of its proper divisors (98989520).

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

64874992 is a wasteful number, since it uses less digits than its factorization.

64874992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666 (or 2660 counting only the distinct ones).

The product of its digits is 870912, while the sum is 49.

The square root of 64874992 is about 8054.5013501768. The cubic root of 64874992 is about 401.8146551178.

The spelling of 64874992 in words is "sixty-four million, eight hundred seventy-four thousand, nine hundred ninety-two".