68566313 has 2 divisors, whose sum is σ = 68566314. Its totient is φ = 68566312.

The previous prime is 68566297. The next prime is 68566331. The reversal of 68566313 is 31366586.

Together with next prime (68566331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66455104 + 2111209 = 8152^2 + 1453^2 .

It is a cyclic number.

It is not a de Polignac number, because 68566313 - 2⁴ = 68566297 is a prime.

It is not a weakly prime, because it can be changed into another prime (68566343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34283156 + 34283157.

It is an arithmetic number, because the mean of its divisors is an integer number (34283157).

Almost surely, 2^68566313 is an apocalyptic number.

It is an amenable number.

68566313 is a deficient number, since it is larger than the sum of its proper divisors (1).

68566313 is an equidigital number, since it uses as much as digits as its factorization.

68566313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 38.

The square root of 68566313 is about 8280.4778243770. The cubic root of 68566313 is about 409.2954646332.

The spelling of 68566313 in words is "sixty-eight million, five hundred sixty-six thousand, three hundred thirteen".