166757672 has 8 divisors (see below), whose sum is σ = 312670650. Its totient is φ = 83378832.

The previous prime is 166757651. The next prime is 166757719. The reversal of 166757672 is 276757661.

It can be written as a sum of positive squares in only one way, i.e., 162970756 + 3786916 = 12766^2 + 1946^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10422347 + ... + 10422362.

Almost surely, 2^166757672 is an apocalyptic number.

It is an amenable number.

166757672 is a deficient number, since it is larger than the sum of its proper divisors (145912978).

166757672 is a wasteful number, since it uses less digits than its factorization.

166757672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20844715 (or 20844711 counting only the distinct ones).

The product of its digits is 740880, while the sum is 47.

The square root of 166757672 is about 12913.4686277545. The cubic root of 166757672 is about 550.4213542536.

The spelling of 166757672 in words is "one hundred sixty-six million, seven hundred fifty-seven thousand, six hundred seventy-two".