166590656 has 28 divisors (see below), whose sum is σ = 344954352. Its totient is φ = 79673088.

The previous prime is 166590647. The next prime is 166590691. The reversal of 166590656 is 656095661.

166590656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55115 + ... + 58058.

Almost surely, 2^166590656 is an apocalyptic number.

166590656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166590656 is an abundant number, since it is smaller than the sum of its proper divisors (178363696).

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

166590656 is a wasteful number, since it uses less digits than its factorization.

166590656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113208 (or 113198 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 44.

The square root of 166590656 is about 12907.0002711707. Note that the first 3 decimals coincide. The cubic root of 166590656 is about 550.2375348639.

The spelling of 166590656 in words is "one hundred sixty-six million, five hundred ninety thousand, six hundred fifty-six".