166155656 has 16 divisors (see below), whose sum is σ = 311939100. Its totient is φ = 82971904.

The previous prime is 166155653. The next prime is 166155659. The reversal of 166155656 is 656551661.

166155656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (166155653) and next prime (166155659).

It can be written as a sum of positive squares in 2 ways, for example, as 140043556 + 26112100 = 11834^2 + 5110^2 .

It is not an unprimeable number, because it can be changed into a prime (166155653) 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, 6365 + ... + 19308.

Almost surely, 2^166155656 is an apocalyptic number.

It is an amenable number.

166155656 is a deficient number, since it is larger than the sum of its proper divisors (145783444).

166155656 is a wasteful number, since it uses less digits than its factorization.

166155656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26488 (or 26484 counting only the distinct ones).

The product of its digits is 162000, while the sum is 41.

The square root of 166155656 is about 12890.1379356468. The cubic root of 166155656 is about 549.7581923274.

The spelling of 166155656 in words is "one hundred sixty-six million, one hundred fifty-five thousand, six hundred fifty-six".