64868960 has 72 divisors (see below), whose sum is σ = 166017600. Its totient is φ = 23941632.

The previous prime is 64868927. The next prime is 64868981. The reversal of 64868960 is 6986846.

It is a congruent number.

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, 25841 + ... + 28239.

It is an arithmetic number, because the mean of its divisors is an integer number (2305800).

Almost surely, 2^64868960 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 64868960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83008800).

64868960 is an abundant number, since it is smaller than the sum of its proper divisors (101148640).

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

64868960 is a wasteful number, since it uses less digits than its factorization.

64868960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440 (or 2419 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 64868960 is about 8054.1268924695. The cubic root of 64868960 is about 401.8022013148.

The spelling of 64868960 in words is "sixty-four million, eight hundred sixty-eight thousand, nine hundred sixty".