166065156 has 18 divisors (see below), whose sum is σ = 419775902. Its totient is φ = 55355040.

The previous prime is 166065131. The next prime is 166065161. The reversal of 166065156 is 651560661.

166065156 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 117288900 + 48776256 = 10830^2 + 6984^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4612921 = 166065156 / (1 + 6 + 6 + 0 + 6 + 5 + 1 + 5 + 6).

166065156 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 166065156.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2306425 + ... + 2306496.

Almost surely, 2^166065156 is an apocalyptic number.

It is an amenable number.

166065156 is an abundant number, since it is smaller than the sum of its proper divisors (253710746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166065156 is a wasteful number, since it uses less digits than its factorization.

166065156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4612931 (or 4612926 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 166065156 is about 12886.6270218393. The cubic root of 166065156 is about 549.6583619367.

The spelling of 166065156 in words is "one hundred sixty-six million, sixty-five thousand, one hundred fifty-six".