68616589 has 2 divisors, whose sum is σ = 68616590. Its totient is φ = 68616588.

The previous prime is 68616577. The next prime is 68616679. The reversal of 68616589 is 98561686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35462025 + 33154564 = 5955^2 + 5758^2 .

It is a cyclic number.

It is not a de Polignac number, because 68616589 - 2⁷ = 68616461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68616529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34308294 + 34308295.

It is an arithmetic number, because the mean of its divisors is an integer number (34308295).

Almost surely, 2^68616589 is an apocalyptic number.

It is an amenable number.

68616589 is a deficient number, since it is larger than the sum of its proper divisors (1).

68616589 is an equidigital number, since it uses as much as digits as its factorization.

68616589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 49.

The square root of 68616589 is about 8283.5130832274. The cubic root of 68616589 is about 409.3954783299.

The spelling of 68616589 in words is "sixty-eight million, six hundred sixteen thousand, five hundred eighty-nine".