68597561 has 2 divisors, whose sum is σ = 68597562. Its totient is φ = 68597560.

The previous prime is 68597521. The next prime is 68597579. The reversal of 68597561 is 16579586.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52113961 + 16483600 = 7219^2 + 4060^2 .

It is a cyclic number.

It is not a de Polignac number, because 68597561 - 2⁶ = 68597497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68597521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34298780 + 34298781.

It is an arithmetic number, because the mean of its divisors is an integer number (34298781).

Almost surely, 2^68597561 is an apocalyptic number.

It is an amenable number.

68597561 is a deficient number, since it is larger than the sum of its proper divisors (1).

68597561 is an equidigital number, since it uses as much as digits as its factorization.

68597561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 47.

The square root of 68597561 is about 8282.3644570859. The cubic root of 68597561 is about 409.3576318098.

The spelling of 68597561 in words is "sixty-eight million, five hundred ninety-seven thousand, five hundred sixty-one".