166336656 has 20 divisors (see below), whose sum is σ = 429703152. Its totient is φ = 55445536.

The previous prime is 166336649. The next prime is 166336693. The reversal of 166336656 is 656633661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1732626 + ... + 1732721.

Almost surely, 2^166336656 is an apocalyptic number.

166336656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166336656 is an abundant number, since it is smaller than the sum of its proper divisors (263366496).

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

166336656 is a wasteful number, since it uses less digits than its factorization.

166336656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3465358 (or 3465352 counting only the distinct ones).

The product of its digits is 349920, while the sum is 42.

The square root of 166336656 is about 12897.1568959984. The cubic root of 166336656 is about 549.9577444121.

The spelling of 166336656 in words is "one hundred sixty-six million, three hundred thirty-six thousand, six hundred fifty-six".