64623344 has 40 divisors (see below), whose sum is σ = 130503552. Its totient is φ = 30965760.

The previous prime is 64623337. The next prime is 64623347. The reversal of 64623344 is 44332646.

64623344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 64623344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64623347) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 55472 + ... + 56624.

Almost surely, 2^64623344 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 64623344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65251776).

64623344 is an abundant number, since it is smaller than the sum of its proper divisors (65880208).

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

64623344 is a wasteful number, since it uses less digits than its factorization.

64623344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305 (or 1299 counting only the distinct ones).

The product of its digits is 41472, while the sum is 32.

The square root of 64623344 is about 8038.8645964464. The cubic root of 64623344 is about 401.2944398782.

The spelling of 64623344 in words is "sixty-four million, six hundred twenty-three thousand, three hundred forty-four".