166072276 has 12 divisors (see below), whose sum is σ = 290973172. Its totient is φ = 82937088.

The previous prime is 166072273. The next prime is 166072307. The reversal of 166072276 is 672270661.

It can be written as a sum of positive squares in 2 ways, for example, as 6656400 + 159415876 = 2580^2 + 12626^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166072273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20925 + ... + 27748.

Almost surely, 2^166072276 is an apocalyptic number.

It is an amenable number.

166072276 is a deficient number, since it is larger than the sum of its proper divisors (124900896).

166072276 is a wasteful number, since it uses less digits than its factorization.

166072276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49530 (or 49528 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 166072276 is about 12886.9032742548. The cubic root of 166072276 is about 549.6662173104. Note that the first 3 decimals are identical.

The spelling of 166072276 in words is "one hundred sixty-six million, seventy-two thousand, two hundred seventy-six".