68163577 has 2 divisors, whose sum is σ = 68163578. Its totient is φ = 68163576.

The previous prime is 68163569. The next prime is 68163581. The reversal of 68163577 is 77536186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57214096 + 10949481 = 7564^2 + 3309^2 .

It is a cyclic number.

It is not a de Polignac number, because 68163577 - 2³ = 68163569 is a prime.

It is not a weakly prime, because it can be changed into another prime (68163527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34081788 + 34081789.

It is an arithmetic number, because the mean of its divisors is an integer number (34081789).

Almost surely, 2^68163577 is an apocalyptic number.

It is an amenable number.

68163577 is a deficient number, since it is larger than the sum of its proper divisors (1).

68163577 is an equidigital number, since it uses as much as digits as its factorization.

68163577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 68163577 is about 8256.1236061483. The cubic root of 68163577 is about 408.4925348217.

The spelling of 68163577 in words is "sixty-eight million, one hundred sixty-three thousand, five hundred seventy-seven".