64344544 has 48 divisors (see below), whose sum is σ = 140842800. Its totient is φ = 28687360.

The previous prime is 64344529. The next prime is 64344587. The reversal of 64344544 is 44544346.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16932 + ... + 20380.

It is an arithmetic number, because the mean of its divisors is an integer number (2934225).

Almost surely, 2^64344544 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 64344544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70421400).

64344544 is an abundant number, since it is smaller than the sum of its proper divisors (76498256).

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

64344544 is a wasteful number, since it uses less digits than its factorization.

64344544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3523 (or 3515 counting only the distinct ones).

The product of its digits is 92160, while the sum is 34.

The square root of 64344544 is about 8021.5050956787. The cubic root of 64344544 is about 400.7165157466.

The spelling of 64344544 in words is "sixty-four million, three hundred forty-four thousand, five hundred forty-four".