166275906 has 16 divisors (see below), whose sum is σ = 333003648. Its totient is φ = 55350000.

The previous prime is 166275881. The next prime is 166275913. The reversal of 166275906 is 609572661.

It is a super-2 number, since 2×166275906² = 55295353832241672, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13945 + ... + 22956.

It is an arithmetic number, because the mean of its divisors is an integer number (20812728).

Almost surely, 2^166275906 is an apocalyptic number.

166275906 is an abundant number, since it is smaller than the sum of its proper divisors (166727742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166275906 is a wasteful number, since it uses less digits than its factorization.

166275906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37657.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 166275906 is about 12894.8015106864. The cubic root of 166275906 is about 549.8907838235.

The spelling of 166275906 in words is "one hundred sixty-six million, two hundred seventy-five thousand, nine hundred six".