68732159 has 2 divisors, whose sum is σ = 68732160. Its totient is φ = 68732158.

The previous prime is 68732141. The next prime is 68732171. The reversal of 68732159 is 95123786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68732159 - 2¹² = 68728063 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68632159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34366079 + 34366080.

It is an arithmetic number, because the mean of its divisors is an integer number (34366080).

Almost surely, 2^68732159 is an apocalyptic number.

68732159 is a deficient number, since it is larger than the sum of its proper divisors (1).

68732159 is an equidigital number, since it uses as much as digits as its factorization.

68732159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 68732159 is about 8290.4860533023. The cubic root of 68732159 is about 409.6251958448.

The spelling of 68732159 in words is "sixty-eight million, seven hundred thirty-two thousand, one hundred fifty-nine".