68256589 has 2 divisors, whose sum is σ = 68256590. Its totient is φ = 68256588.

The previous prime is 68256577. The next prime is 68256599. The reversal of 68256589 is 98565286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48302500 + 19954089 = 6950^2 + 4467^2 .

It is a cyclic number.

It is not a de Polignac number, because 68256589 - 2⁵ = 68256557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68256599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34128294 + 34128295.

It is an arithmetic number, because the mean of its divisors is an integer number (34128295).

Almost surely, 2^68256589 is an apocalyptic number.

It is an amenable number.

68256589 is a deficient number, since it is larger than the sum of its proper divisors (1).

68256589 is an equidigital number, since it uses as much as digits as its factorization.

68256589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 49.

The square root of 68256589 is about 8261.7545957260. The cubic root of 68256589 is about 408.6782519873.

The spelling of 68256589 in words is "sixty-eight million, two hundred fifty-six thousand, five hundred eighty-nine".