168771089 has 2 divisors, whose sum is σ = 168771090. Its totient is φ = 168771088.

The previous prime is 168771077. The next prime is 168771103. The reversal of 168771089 is 980177861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123988225 + 44782864 = 11135^2 + 6692^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168771089 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (168771059) 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 as a sum of consecutive naturals, namely, 84385544 + 84385545.

It is an arithmetic number, because the mean of its divisors is an integer number (84385545).

Almost surely, 2^168771089 is an apocalyptic number.

It is an amenable number.

168771089 is a deficient number, since it is larger than the sum of its proper divisors (1).

168771089 is an equidigital number, since it uses as much as digits as its factorization.

168771089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 47.

The square root of 168771089 is about 12991.1927473962. The cubic root of 168771089 is about 552.6277438491.

The spelling of 168771089 in words is "one hundred sixty-eight million, seven hundred seventy-one thousand, eighty-nine".