166660684 has 12 divisors (see below), whose sum is σ = 297861984. Its totient is φ = 81557264.

The previous prime is 166660667. The next prime is 166660693. The reversal of 166660684 is 486066661.

166660684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 166660684.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443059 + ... + 443434.

It is an arithmetic number, because the mean of its divisors is an integer number (24821832).

Almost surely, 2^166660684 is an apocalyptic number.

It is an amenable number.

166660684 is a deficient number, since it is larger than the sum of its proper divisors (131201300).

166660684 is a wasteful number, since it uses less digits than its factorization.

166660684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886544 (or 886542 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 166660684 is about 12909.7127775950. The cubic root of 166660684 is about 550.3146232936.

The spelling of 166660684 in words is "one hundred sixty-six million, six hundred sixty thousand, six hundred eighty-four".