168686089 has 16 divisors (see below), whose sum is σ = 198866304. Its totient is φ = 141062400.

The previous prime is 168686057. The next prime is 168686107. The reversal of 168686089 is 980686861.

It is a cyclic number.

It is not a de Polignac number, because 168686089 - 2⁵ = 168686057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168686989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42577 + ... + 46369.

It is an arithmetic number, because the mean of its divisors is an integer number (12429144).

Almost surely, 2^168686089 is an apocalyptic number.

It is an amenable number.

168686089 is a deficient number, since it is larger than the sum of its proper divisors (30180215).

168686089 is a wasteful number, since it uses less digits than its factorization.

168686089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4128.

The product of its (nonzero) digits is 995328, while the sum is 52.

The square root of 168686089 is about 12987.9208882715. The cubic root of 168686089 is about 552.5349529835.

The spelling of 168686089 in words is "one hundred sixty-eight million, six hundred eighty-six thousand, eighty-nine".