168857115 has 64 divisors (see below), whose sum is σ = 318366720. Its totient is φ = 74833920.

The previous prime is 168857069. The next prime is 168857231. The reversal of 168857115 is 511758861.

It is not a de Polignac number, because 168857115 - 2¹⁰ = 168856091 is a prime.

It is a super-2 number, since 2×168857115² = 57025450572246450, which contains 22 as substring.

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 63 ways as a sum of consecutive naturals, for example, 600775 + ... + 601055.

It is an arithmetic number, because the mean of its divisors is an integer number (4974480).

Almost surely, 2^168857115 is an apocalyptic number.

168857115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

168857115 is a deficient number, since it is larger than the sum of its proper divisors (149509605).

168857115 is a wasteful number, since it uses less digits than its factorization.

168857115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452.

The product of its digits is 67200, while the sum is 42.

The square root of 168857115 is about 12994.5032609946. The cubic root of 168857115 is about 552.7216230386.

The spelling of 168857115 in words is "one hundred sixty-eight million, eight hundred fifty-seven thousand, one hundred fifteen".