68425657 has 2 divisors, whose sum is σ = 68425658. Its totient is φ = 68425656.

The previous prime is 68425639. The next prime is 68425661. The reversal of 68425657 is 75652486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47485881 + 20939776 = 6891^2 + 4576^2 .

It is a cyclic number.

It is not a de Polignac number, because 68425657 - 2¹¹ = 68423609 is a prime.

It is not a weakly prime, because it can be changed into another prime (68425057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34212828 + 34212829.

It is an arithmetic number, because the mean of its divisors is an integer number (34212829).

Almost surely, 2^68425657 is an apocalyptic number.

It is an amenable number.

68425657 is a deficient number, since it is larger than the sum of its proper divisors (1).

68425657 is an equidigital number, since it uses as much as digits as its factorization.

68425657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 43.

The square root of 68425657 is about 8271.9802345025. The cubic root of 68425657 is about 409.0153986586.

The spelling of 68425657 in words is "sixty-eight million, four hundred twenty-five thousand, six hundred fifty-seven".