68385413 has 2 divisors, whose sum is σ = 68385414. Its totient is φ = 68385412.

The previous prime is 68385397. The next prime is 68385419. The reversal of 68385413 is 31458386.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46267204 + 22118209 = 6802^2 + 4703^2 .

It is a cyclic number.

It is not a de Polignac number, because 68385413 - 2⁴ = 68385397 is a prime.

It is a super-2 number, since 2×68385413² = 9353129422361138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68385419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34192706 + 34192707.

It is an arithmetic number, because the mean of its divisors is an integer number (34192707).

Almost surely, 2^68385413 is an apocalyptic number.

It is an amenable number.

68385413 is a deficient number, since it is larger than the sum of its proper divisors (1).

68385413 is an equidigital number, since it uses as much as digits as its factorization.

68385413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 38.

The square root of 68385413 is about 8269.5473273934. The cubic root of 68385413 is about 408.9351965605.

The spelling of 68385413 in words is "sixty-eight million, three hundred eighty-five thousand, four hundred thirteen".