715936666 has 4 divisors (see below), whose sum is σ = 1073905002. Its totient is φ = 357968332.

The previous prime is 715936651. The next prime is 715936673. The reversal of 715936666 is 666639517.

715936666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 520524225 + 195412441 = 22815^2 + 13979^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178984165 + ... + 178984168.

Almost surely, 2^715936666 is an apocalyptic number.

715936666 is a deficient number, since it is larger than the sum of its proper divisors (357968336).

715936666 is a wasteful number, since it uses less digits than its factorization.

715936666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357968335.

The product of its digits is 1224720, while the sum is 49.

The square root of 715936666 is about 26756.9928429934. The cubic root of 715936666 is about 894.5917079043.

The spelling of 715936666 in words is "seven hundred fifteen million, nine hundred thirty-six thousand, six hundred sixty-six".