166722992 has 20 divisors (see below), whose sum is σ = 324443520. Its totient is φ = 82995648.

The previous prime is 166722979. The next prime is 166723003. The reversal of 166722992 is 299227661.

It is a super-2 number, since 2×166722992² = 55593112122864128, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 19088 + ... + 26415.

It is an arithmetic number, because the mean of its divisors is an integer number (16222176).

Almost surely, 2^166722992 is an apocalyptic number.

It is an amenable number.

166722992 is a deficient number, since it is larger than the sum of its proper divisors (157720528).

166722992 is a wasteful number, since it uses less digits than its factorization.

166722992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45740 (or 45734 counting only the distinct ones).

The product of its digits is 163296, while the sum is 44.

The square root of 166722992 is about 12912.1257738608. The cubic root of 166722992 is about 550.3831952177.

The spelling of 166722992 in words is "one hundred sixty-six million, seven hundred twenty-two thousand, nine hundred ninety-two".