68589589 has 2 divisors, whose sum is σ = 68589590. Its totient is φ = 68589588.

The previous prime is 68589557. The next prime is 68589613. The reversal of 68589589 is 98598586.

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., 38229489 + 30360100 = 6183^2 + 5510^2 .

It is a cyclic number.

It is not a de Polignac number, because 68589589 - 2⁵ = 68589557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68581589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34294794 + 34294795.

It is an arithmetic number, because the mean of its divisors is an integer number (34294795).

Almost surely, 2^68589589 is an apocalyptic number.

It is an amenable number.

68589589 is a deficient number, since it is larger than the sum of its proper divisors (1).

68589589 is an equidigital number, since it uses as much as digits as its factorization.

68589589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6220800, while the sum is 58.

The square root of 68589589 is about 8281.8831795673. The cubic root of 68589589 is about 409.3417734935.

The spelling of 68589589 in words is "sixty-eight million, five hundred eighty-nine thousand, five hundred eighty-nine".