166672317 has 16 divisors (see below), whose sum is σ = 254922752. Its totient is φ = 94886640.

The previous prime is 166672307. The next prime is 166672327. The reversal of 166672317 is 713276661.

It is an interprime number because it is at equal distance from previous prime (166672307) and next prime (166672327).

It is not a de Polignac number, because 166672317 - 2⁷ = 166672189 is a prime.

It is a super-2 number, since 2×166672317² = 55559322508296978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166672307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8953 + ... + 20334.

It is an arithmetic number, because the mean of its divisors is an integer number (15932672).

Almost surely, 2^166672317 is an apocalyptic number.

It is an amenable number.

166672317 is a deficient number, since it is larger than the sum of its proper divisors (88250435).

166672317 is a wasteful number, since it uses less digits than its factorization.

166672317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29568.

The product of its digits is 63504, while the sum is 39.

The square root of 166672317 is about 12910.1633219723. The cubic root of 166672317 is about 550.3274270754.

The spelling of 166672317 in words is "one hundred sixty-six million, six hundred seventy-two thousand, three hundred seventeen".