68715089 has 2 divisors, whose sum is σ = 68715090. Its totient is φ = 68715088.

The previous prime is 68715043. The next prime is 68715103. The reversal of 68715089 is 98051786.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66259600 + 2455489 = 8140^2 + 1567^2 .

It is a cyclic number.

It is not a de Polignac number, because 68715089 - 2²⁰ = 67666513 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68715019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34357544 + 34357545.

It is an arithmetic number, because the mean of its divisors is an integer number (34357545).

Almost surely, 2^68715089 is an apocalyptic number.

It is an amenable number.

68715089 is a deficient number, since it is larger than the sum of its proper divisors (1).

68715089 is an equidigital number, since it uses as much as digits as its factorization.

68715089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 68715089 is about 8289.4564960557. The cubic root of 68715089 is about 409.5912821663.

The spelling of 68715089 in words is "sixty-eight million, seven hundred fifteen thousand, eighty-nine".