64992256 has 44 divisors (see below), whose sum is σ = 148497568. Its totient is φ = 27850752.

The previous prime is 64992247. The next prime is 64992269. The reversal of 64992256 is 65229946.

64992256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2635 + ... + 11701.

Almost surely, 2^64992256 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 64992256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74248784).

64992256 is an abundant number, since it is smaller than the sum of its proper divisors (83505312).

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

64992256 is an equidigital number, since it uses as much as digits as its factorization.

64992256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9094 (or 9076 counting only the distinct ones).

The product of its digits is 233280, while the sum is 43.

The square root of 64992256 is about 8061.7774715009. Note that the first 3 decimals coincide. The cubic root of 64992256 is about 402.0566077887.

The spelling of 64992256 in words is "sixty-four million, nine hundred ninety-two thousand, two hundred fifty-six".