68479613 has 2 divisors, whose sum is σ = 68479614. Its totient is φ = 68479612.

The previous prime is 68479583. The next prime is 68479669. The reversal of 68479613 is 31697486.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54804409 + 13675204 = 7403^2 + 3698^2 .

It is a cyclic number.

It is not a de Polignac number, because 68479613 - 2⁶ = 68479549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68479673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34239806 + 34239807.

It is an arithmetic number, because the mean of its divisors is an integer number (34239807).

Almost surely, 2^68479613 is an apocalyptic number.

It is an amenable number.

68479613 is a deficient number, since it is larger than the sum of its proper divisors (1).

68479613 is an equidigital number, since it uses as much as digits as its factorization.

68479613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 68479613 is about 8275.2409632590. The cubic root of 68479613 is about 409.1228780150.

The spelling of 68479613 in words is "sixty-eight million, four hundred seventy-nine thousand, six hundred thirteen".