166937746 has 16 divisors (see below), whose sum is σ = 259349400. Its totient is φ = 80494848.

The previous prime is 166937741. The next prime is 166937761. The reversal of 166937746 is 647739661.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 136632721 + 30305025 = 11689^2 + 5505^2 .

It is a super-2 number, since 2×166937746² = 55736422079121032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166937746.

It is not an unprimeable number, because it can be changed into a prime (166937741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85396 + ... + 87328.

Almost surely, 2^166937746 is an apocalyptic number.

166937746 is a deficient number, since it is larger than the sum of its proper divisors (92411654).

166937746 is a wasteful number, since it uses less digits than its factorization.

166937746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3453.

The product of its digits is 1143072, while the sum is 49.

The square root of 166937746 is about 12920.4390792264. The cubic root of 166937746 is about 550.6194079483.

The spelling of 166937746 in words is "one hundred sixty-six million, nine hundred thirty-seven thousand, seven hundred forty-six".