166961072 has 20 divisors (see below), whose sum is σ = 325960536. Its totient is φ = 82842240.

The previous prime is 166961051. The next prime is 166961083. The reversal of 166961072 is 270169661.

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, 37733 + ... + 41924.

Almost surely, 2^166961072 is an apocalyptic number.

It is an amenable number.

166961072 is a deficient number, since it is larger than the sum of its proper divisors (158999464).

166961072 is a wasteful number, since it uses less digits than its factorization.

166961072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79796 (or 79790 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 166961072 is about 12921.3417259973. The cubic root of 166961072 is about 550.6450525383.

The spelling of 166961072 in words is "one hundred sixty-six million, nine hundred sixty-one thousand, seventy-two".