68944613 has 2 divisors, whose sum is σ = 68944614. Its totient is φ = 68944612.

The previous prime is 68944567. The next prime is 68944633. The reversal of 68944613 is 31644986.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67930564 + 1014049 = 8242^2 + 1007^2 .

It is a cyclic number.

It is not a de Polignac number, because 68944613 - 2¹² = 68940517 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 (68944633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34472306 + 34472307.

It is an arithmetic number, because the mean of its divisors is an integer number (34472307).

Almost surely, 2^68944613 is an apocalyptic number.

It is an amenable number.

68944613 is a deficient number, since it is larger than the sum of its proper divisors (1).

68944613 is an equidigital number, since it uses as much as digits as its factorization.

68944613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 41.

The square root of 68944613 is about 8303.2892879870. The cubic root of 68944613 is about 410.0468179731.

The spelling of 68944613 in words is "sixty-eight million, nine hundred forty-four thousand, six hundred thirteen".