170668857 has 16 divisors (see below), whose sum is σ = 243002880. Its totient is φ = 106310400.

The previous prime is 170668843. The next prime is 170668859. The reversal of 170668857 is 758866071.

It is not a de Polignac number, because 170668857 - 2⁸ = 170668601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (170668859) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 28944 + ... + 34337.

It is an arithmetic number, because the mean of its divisors is an integer number (15187680).

Almost surely, 2^170668857 is an apocalyptic number.

It is an amenable number.

170668857 is a deficient number, since it is larger than the sum of its proper divisors (72334023).

170668857 is a wasteful number, since it uses less digits than its factorization.

170668857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63344.

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 170668857 is about 13064.0291258095. The cubic root of 170668857 is about 554.6913924271.

The spelling of 170668857 in words is "one hundred seventy million, six hundred sixty-eight thousand, eight hundred fifty-seven".