168775361 has 2 divisors, whose sum is σ = 168775362. Its totient is φ = 168775360.

The previous prime is 168775351. The next prime is 168775379. The reversal of 168775361 is 163577861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157653136 + 11122225 = 12556^2 + 3335^2 .

It is a cyclic number.

It is not a de Polignac number, because 168775361 - 2²² = 164581057 is a prime.

It is not a weakly prime, because it can be changed into another prime (168775351) 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, 84387680 + 84387681.

It is an arithmetic number, because the mean of its divisors is an integer number (84387681).

Almost surely, 2^168775361 is an apocalyptic number.

It is an amenable number.

168775361 is a deficient number, since it is larger than the sum of its proper divisors (1).

168775361 is an equidigital number, since it uses as much as digits as its factorization.

168775361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 44.

The square root of 168775361 is about 12991.3571654389. The cubic root of 168775361 is about 552.6324065865.

The spelling of 168775361 in words is "one hundred sixty-eight million, seven hundred seventy-five thousand, three hundred sixty-one".