168900685 has 8 divisors (see below), whose sum is σ = 202772736. Its totient is φ = 135059280.

The previous prime is 168900673. The next prime is 168900701. The reversal of 168900685 is 586009861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-168900685 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 7032 + ... + 19678.

It is an arithmetic number, because the mean of its divisors is an integer number (25346592).

Almost surely, 2^168900685 is an apocalyptic number.

It is an amenable number.

168900685 is a deficient number, since it is larger than the sum of its proper divisors (33872051).

168900685 is a wasteful number, since it uses less digits than its factorization.

168900685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15323.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 168900685 is about 12996.1796309531. The cubic root of 168900685 is about 552.7691583175.

The spelling of 168900685 in words is "one hundred sixty-eight million, nine hundred thousand, six hundred eighty-five".