166672250 has 32 divisors (see below), whose sum is σ = 330372432. Its totient is φ = 62745600.

The previous prime is 166672243. The next prime is 166672277. The reversal of 166672250 is 52276661.

It can be written as a sum of positive squares in 8 ways, for example, as 2601769 + 164070481 = 1613^2 + 12809^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 166672250.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15359 + ... + 23858.

Almost surely, 2^166672250 is an apocalyptic number.

166672250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166672250 is a deficient number, since it is larger than the sum of its proper divisors (163700182).

166672250 is a wasteful number, since it uses less digits than its factorization.

166672250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39251 (or 39241 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 166672250 is about 12910.1607271172. The cubic root of 166672250 is about 550.3273533340.

The spelling of 166672250 in words is "one hundred sixty-six million, six hundred seventy-two thousand, two hundred fifty".