666715036 has 24 divisors (see below), whose sum is σ = 1258058144. Its totient is φ = 307333440.

The previous prime is 666715009. The next prime is 666715079. The reversal of 666715036 is 630517666.

It is a self number, because there is not a number n which added to its sum of digits gives 666715036.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36841 + ... + 51871.

Almost surely, 2^666715036 is an apocalyptic number.

It is an amenable number.

666715036 is a deficient number, since it is larger than the sum of its proper divisors (591343108).

666715036 is a wasteful number, since it uses less digits than its factorization.

666715036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15901 (or 15899 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 666715036 is about 25820.8256258393. The cubic root of 666715036 is about 873.6015914777.

The spelling of 666715036 in words is "six hundred sixty-six million, seven hundred fifteen thousand, thirty-six".