68413691 has 2 divisors, whose sum is σ = 68413692. Its totient is φ = 68413690.

The previous prime is 68413687. The next prime is 68413727. The reversal of 68413691 is 19631486.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68413691 - 2² = 68413687 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68413601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34206845 + 34206846.

It is an arithmetic number, because the mean of its divisors is an integer number (34206846).

Almost surely, 2^68413691 is an apocalyptic number.

68413691 is a deficient number, since it is larger than the sum of its proper divisors (1).

68413691 is an equidigital number, since it uses as much as digits as its factorization.

68413691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The square root of 68413691 is about 8271.2569177846. The cubic root of 68413691 is about 408.9915549534.

The spelling of 68413691 in words is "sixty-eight million, four hundred thirteen thousand, six hundred ninety-one".