166703972 has 24 divisors (see below), whose sum is σ = 313964280. Its totient is φ = 77160960.

The previous prime is 166703963. The next prime is 166703987. The reversal of 166703972 is 279307661.

It can be written as a sum of positive squares in 4 ways, for example, as 1478656 + 165225316 = 1216^2 + 12854^2 .

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 15947 + ... + 24242.

It is an arithmetic number, because the mean of its divisors is an integer number (13081845).

Almost surely, 2^166703972 is an apocalyptic number.

It is an amenable number.

166703972 is a deficient number, since it is larger than the sum of its proper divisors (147260308).

166703972 is a wasteful number, since it uses less digits than its factorization.

166703972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40271 (or 40269 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 166703972 is about 12911.3892358646. The cubic root of 166703972 is about 550.3622649182.

The spelling of 166703972 in words is "one hundred sixty-six million, seven hundred three thousand, nine hundred seventy-two".