68602013 has 2 divisors, whose sum is σ = 68602014. Its totient is φ = 68602012.

The previous prime is 68601991. The next prime is 68602049. The reversal of 68602013 is 31020686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68525284 + 76729 = 8278^2 + 277^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68602013 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68602063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34301006 + 34301007.

It is an arithmetic number, because the mean of its divisors is an integer number (34301007).

Almost surely, 2^68602013 is an apocalyptic number.

It is an amenable number.

68602013 is a deficient number, since it is larger than the sum of its proper divisors (1).

68602013 is an equidigital number, since it uses as much as digits as its factorization.

68602013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 68602013 is about 8282.6332165562. The cubic root of 68602013 is about 409.3664874247.

Adding to 68602013 its reverse (31020686), we get a palindrome (99622699).

The spelling of 68602013 in words is "sixty-eight million, six hundred two thousand, thirteen".