166772572 has 12 divisors (see below), whose sum is σ = 292012000. Its totient is φ = 83340576.

The previous prime is 166772509. The next prime is 166772611. The reversal of 166772572 is 275277661.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2433 + ... + 18424.

Almost surely, 2^166772572 is an apocalyptic number.

It is an amenable number.

166772572 is a deficient number, since it is larger than the sum of its proper divisors (125239428).

166772572 is a wasteful number, since it uses less digits than its factorization.

166772572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22860 (or 22858 counting only the distinct ones).

The product of its digits is 246960, while the sum is 43.

The square root of 166772572 is about 12914.0455319005. The cubic root of 166772572 is about 550.4377473703.

The spelling of 166772572 in words is "one hundred sixty-six million, seven hundred seventy-two thousand, five hundred seventy-two".