43725664 has 12 divisors (see below), whose sum is σ = 86084964. Its totient is φ = 21862816.

The previous prime is 43725659. The next prime is 43725679. The reversal of 43725664 is 46652734.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 683182 + ... + 683245.

It is an arithmetic number, because the mean of its divisors is an integer number (7173747).

Almost surely, 2^43725664 is an apocalyptic number.

It is an amenable number.

43725664 is a deficient number, since it is larger than the sum of its proper divisors (42359300).

43725664 is a wasteful number, since it uses less digits than its factorization.

43725664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366437 (or 1366429 counting only the distinct ones).

The product of its digits is 120960, while the sum is 37.

The square root of 43725664 is about 6612.5383930832. The cubic root of 43725664 is about 352.2995899856.

The spelling of 43725664 in words is "forty-three million, seven hundred twenty-five thousand, six hundred sixty-four".