660911675 has 12 divisors (see below), whose sum is σ = 862664280. Its totient is φ = 500901120.

The previous prime is 660911659. The next prime is 660911681. The reversal of 660911675 is 576119066.

It is not a de Polignac number, because 660911675 - 2⁴ = 660911659 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 695222 + ... + 696171.

It is an arithmetic number, because the mean of its divisors is an integer number (71888690).

Almost surely, 2^660911675 is an apocalyptic number.

660911675 is a deficient number, since it is larger than the sum of its proper divisors (201752605).

660911675 is a wasteful number, since it uses less digits than its factorization.

660911675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391422 (or 1391417 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 660911675 is about 25708.2024848102. The cubic root of 660911675 is about 871.0594724680.

The spelling of 660911675 in words is "six hundred sixty million, nine hundred eleven thousand, six hundred seventy-five".