64356992 has 96 divisors (see below), whose sum is σ = 154419840. Its totient is φ = 26611200.

The previous prime is 64356977. The next prime is 64357021. The reversal of 64356992 is 29965346.

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, 194267 + ... + 194597.

It is an arithmetic number, because the mean of its divisors is an integer number (1608540).

Almost surely, 2^64356992 is an apocalyptic number.

64356992 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64356992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77209920).

64356992 is an abundant number, since it is smaller than the sum of its proper divisors (90062848).

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

64356992 is a wasteful number, since it uses less digits than its factorization.

64356992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 371 counting only the distinct ones).

The product of its digits is 349920, while the sum is 44.

The square root of 64356992 is about 8022.2809723918. The cubic root of 64356992 is about 400.7423547546.

The spelling of 64356992 in words is "sixty-four million, three hundred fifty-six thousand, nine hundred ninety-two".