64548864 has 156 divisors (see below), whose sum is σ = 199336176. Its totient is φ = 20054016.

The previous prime is 64548857. The next prime is 64548901. The reversal of 64548864 is 46884546.

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, 626637 + ... + 626739.

It is an arithmetic number, because the mean of its divisors is an integer number (1277796).

Almost surely, 2^64548864 is an apocalyptic number.

64548864 is a gapful number since it is divisible by the number (64) 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 64548864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99668088).

64548864 is an abundant number, since it is smaller than the sum of its proper divisors (134787312).

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

64548864 is a wasteful number, since it uses less digits than its factorization.

64548864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 125 counting only the distinct ones).

The product of its digits is 737280, while the sum is 45.

The square root of 64548864 is about 8034.2307659165. The cubic root of 64548864 is about 401.1402133621.

The spelling of 64548864 in words is "sixty-four million, five hundred forty-eight thousand, eight hundred sixty-four".