68579213 has 2 divisors, whose sum is σ = 68579214. Its totient is φ = 68579212.

The previous prime is 68579209. The next prime is 68579219. The reversal of 68579213 is 31297586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37185604 + 31393609 = 6098^2 + 5603^2 .

It is a cyclic number.

It is not a de Polignac number, because 68579213 - 2² = 68579209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68579219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34289606 + 34289607.

It is an arithmetic number, because the mean of its divisors is an integer number (34289607).

Almost surely, 2^68579213 is an apocalyptic number.

It is an amenable number.

68579213 is a deficient number, since it is larger than the sum of its proper divisors (1).

68579213 is an equidigital number, since it uses as much as digits as its factorization.

68579213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 68579213 is about 8281.2567282992. The cubic root of 68579213 is about 409.3211311749.

The spelling of 68579213 in words is "sixty-eight million, five hundred seventy-nine thousand, two hundred thirteen".