715664 has 10 divisors (see below), whose sum is σ = 1386630. Its totient is φ = 357824.

The previous prime is 715657. The next prime is 715679. The reversal of 715664 is 466517.

715664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 672400 + 43264 = 820^2 + 208^2 .

It is an unprimeable number.

715664 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22349 + ... + 22380.

It is an arithmetic number, because the mean of its divisors is an integer number (138663).

2⁷¹⁵⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

715664 is a deficient number, since it is larger than the sum of its proper divisors (670966).

715664 is a wasteful number, since it uses less digits than its factorization.

715664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44737 (or 44731 counting only the distinct ones).

The product of its digits is 5040, while the sum is 29.

The square root of 715664 is about 845.9692665812. The cubic root of 715664 is about 89.4478124433.

The spelling of 715664 in words is "seven hundred fifteen thousand, six hundred sixty-four".