168982657 has 2 divisors, whose sum is σ = 168982658. Its totient is φ = 168982656.

The previous prime is 168982651. The next prime is 168982691. The reversal of 168982657 is 756289861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86099841 + 82882816 = 9279^2 + 9104^2 .

It is a cyclic number.

It is not a de Polignac number, because 168982657 - 2²⁷ = 34764929 is a prime.

It is not a weakly prime, because it can be changed into another prime (168982651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84491328 + 84491329.

It is an arithmetic number, because the mean of its divisors is an integer number (84491329).

Almost surely, 2^168982657 is an apocalyptic number.

It is an amenable number.

168982657 is a deficient number, since it is larger than the sum of its proper divisors (1).

168982657 is an equidigital number, since it uses as much as digits as its factorization.

168982657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 52.

The square root of 168982657 is about 12999.3329444245. The cubic root of 168982657 is about 552.8585683853.

The spelling of 168982657 in words is "one hundred sixty-eight million, nine hundred eighty-two thousand, six hundred fifty-seven".