166994572 has 24 divisors (see below), whose sum is σ = 314173440. Its totient is φ = 77418000.

The previous prime is 166994563. The next prime is 166994617. The reversal of 166994572 is 275499661.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19804 + ... + 26947.

It is an arithmetic number, because the mean of its divisors is an integer number (13090560).

Almost surely, 2^166994572 is an apocalyptic number.

It is an amenable number.

166994572 is a deficient number, since it is larger than the sum of its proper divisors (147178868).

166994572 is a wasteful number, since it uses less digits than its factorization.

166994572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46821 (or 46819 counting only the distinct ones).

The product of its digits is 816480, while the sum is 49.

The square root of 166994572 is about 12922.6379659882. The cubic root of 166994572 is about 550.6818782395.

The spelling of 166994572 in words is "one hundred sixty-six million, nine hundred ninety-four thousand, five hundred seventy-two".