166670372 has 24 divisors (see below), whose sum is σ = 324196992. Its totient is φ = 74328800.

The previous prime is 166670341. The next prime is 166670407. The reversal of 166670372 is 273076661.

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, 33404 + ... + 38067.

It is an arithmetic number, because the mean of its divisors is an integer number (13508208).

Almost surely, 2^166670372 is an apocalyptic number.

It is an amenable number.

166670372 is a deficient number, since it is larger than the sum of its proper divisors (157526620).

166670372 is a wasteful number, since it uses less digits than its factorization.

166670372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71539 (or 71537 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 166670372 is about 12910.0879935034. The cubic root of 166670372 is about 550.3252863659.

The spelling of 166670372 in words is "one hundred sixty-six million, six hundred seventy thousand, three hundred seventy-two".