68591597 has 2 divisors, whose sum is σ = 68591598. Its totient is φ = 68591596.

The previous prime is 68591569. The next prime is 68591639. The reversal of 68591597 is 79519586.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54671236 + 13920361 = 7394^2 + 3731^2 .

It is a cyclic number.

It is not a de Polignac number, because 68591597 - 2¹⁰ = 68590573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68591507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34295798 + 34295799.

It is an arithmetic number, because the mean of its divisors is an integer number (34295799).

Almost surely, 2^68591597 is an apocalyptic number.

It is an amenable number.

68591597 is a deficient number, since it is larger than the sum of its proper divisors (1).

68591597 is an equidigital number, since it uses as much as digits as its factorization.

68591597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 50.

The square root of 68591597 is about 8282.0044071469. The cubic root of 68591597 is about 409.3457680271.

The spelling of 68591597 in words is "sixty-eight million, five hundred ninety-one thousand, five hundred ninety-seven".