68905597 has 2 divisors, whose sum is σ = 68905598. Its totient is φ = 68905596.

The previous prime is 68905589. The next prime is 68905601. The reversal of 68905597 is 79550986.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66928761 + 1976836 = 8181^2 + 1406^2 .

It is a cyclic number.

It is not a de Polignac number, because 68905597 - 2³ = 68905589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68905597.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68905517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34452798 + 34452799.

It is an arithmetic number, because the mean of its divisors is an integer number (34452799).

Almost surely, 2^68905597 is an apocalyptic number.

It is an amenable number.

68905597 is a deficient number, since it is larger than the sum of its proper divisors (1).

68905597 is an equidigital number, since it uses as much as digits as its factorization.

68905597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 680400, while the sum is 49.

The square root of 68905597 is about 8300.9395251381. The cubic root of 68905597 is about 409.9694543970.

The spelling of 68905597 in words is "sixty-eight million, nine hundred five thousand, five hundred ninety-seven".