166006656 has 48 divisors (see below), whose sum is σ = 477704760. Its totient is φ = 55335168.

The previous prime is 166006639. The next prime is 166006661. The reversal of 166006656 is 656600661.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 166006656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70900 + ... + 73203.

Almost surely, 2^166006656 is an apocalyptic number.

166006656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166006656 is an abundant number, since it is smaller than the sum of its proper divisors (311698104).

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

166006656 is a wasteful number, since it uses less digits than its factorization.

166006656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144123 (or 144108 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 166006656 is about 12884.3570270309. The cubic root of 166006656 is about 549.5938113883.

The spelling of 166006656 in words is "one hundred sixty-six million, six thousand, six hundred fifty-six".