166330656 has 36 divisors (see below), whose sum is σ = 473003622. Its totient is φ = 55443456.

The previous prime is 166330643. The next prime is 166330663. The reversal of 166330656 is 656033661.

It is a happy number.

166330656 is a `hidden beast` number, since 16 + 633 + 0 + 6 + 5 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 131331600 + 34999056 = 11460^2 + 5916^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 166330656.

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, 288481 + ... + 289056.

Almost surely, 2^166330656 is an apocalyptic number.

166330656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166330656 is an abundant number, since it is smaller than the sum of its proper divisors (306672966).

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

166330656 is a wasteful number, since it uses less digits than its factorization.

166330656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577553 (or 577542 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 166330656 is about 12896.9242844951. The cubic root of 166330656 is about 549.9511317463.

The spelling of 166330656 in words is "one hundred sixty-six million, three hundred thirty thousand, six hundred fifty-six".