166814656 has 28 divisors (see below), whose sum is σ = 338071968. Its totient is φ = 81631232.

The previous prime is 166814639. The next prime is 166814677. The reversal of 166814656 is 656418661.

166814656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24721 + ... + 30736.

Almost surely, 2^166814656 is an apocalyptic number.

166814656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166814656 is an abundant number, since it is smaller than the sum of its proper divisors (171257312).

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

166814656 is an equidigital number, since it uses as much as digits as its factorization.

166814656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55516 (or 55506 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The square root of 166814656 is about 12915.6748178328. The cubic root of 166814656 is about 550.4840433003.

The spelling of 166814656 in words is "one hundred sixty-six million, eight hundred fourteen thousand, six hundred fifty-six".