166170986 has 16 divisors (see below), whose sum is σ = 258336000. Its totient is φ = 80069808.

The previous prime is 166170931. The next prime is 166170997. The reversal of 166170986 is 689071661.

It is a super-2 number, since 2×166170986² = 55225593176424392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32351 + ... + 37133.

It is an arithmetic number, because the mean of its divisors is an integer number (16146000).

Almost surely, 2^166170986 is an apocalyptic number.

166170986 is a deficient number, since it is larger than the sum of its proper divisors (92165014).

166170986 is a wasteful number, since it uses less digits than its factorization.

166170986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5413.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 166170986 is about 12890.7325625815. The cubic root of 166170986 is about 549.7750992328.

The spelling of 166170986 in words is "one hundred sixty-six million, one hundred seventy thousand, nine hundred eighty-six".