168713089 has 2 divisors, whose sum is σ = 168713090. Its totient is φ = 168713088.

The previous prime is 168713087. The next prime is 168713093. The reversal of 168713089 is 980317861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159592689 + 9120400 = 12633^2 + 3020^2 .

It is a cyclic number.

It is not a de Polignac number, because 168713089 - 2¹ = 168713087 is a prime.

Together with 168713087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (168713087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84356544 + 84356545.

It is an arithmetic number, because the mean of its divisors is an integer number (84356545).

Almost surely, 2^168713089 is an apocalyptic number.

It is an amenable number.

168713089 is a deficient number, since it is larger than the sum of its proper divisors (1).

168713089 is an equidigital number, since it uses as much as digits as its factorization.

168713089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 168713089 is about 12988.9602740173. The cubic root of 168713089 is about 552.5644311065.

The spelling of 168713089 in words is "one hundred sixty-eight million, seven hundred thirteen thousand, eighty-nine".