166672874 has 4 divisors (see below), whose sum is σ = 250009314. Its totient is φ = 83336436.

The previous prime is 166672873. The next prime is 166672897. The reversal of 166672874 is 478276661.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 92833225 + 73839649 = 9635^2 + 8593^2 .

It is not an unprimeable number, because it can be changed into a prime (166672873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41668217 + ... + 41668220.

Almost surely, 2^166672874 is an apocalyptic number.

166672874 is a deficient number, since it is larger than the sum of its proper divisors (83336440).

166672874 is an equidigital number, since it uses as much as digits as its factorization.

166672874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83336439.

The product of its digits is 677376, while the sum is 47.

The square root of 166672874 is about 12910.1848941059. The cubic root of 166672874 is about 550.3280401186.

The spelling of 166672874 in words is "one hundred sixty-six million, six hundred seventy-two thousand, eight hundred seventy-four".