68630839 has 2 divisors, whose sum is σ = 68630840. Its totient is φ = 68630838.

The previous prime is 68630797. The next prime is 68630897. The reversal of 68630839 is 93803686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68630839 - 2¹⁹ = 68106551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68630795 and 68630804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68630339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34315419 + 34315420.

It is an arithmetic number, because the mean of its divisors is an integer number (34315420).

Almost surely, 2^68630839 is an apocalyptic number.

68630839 is a deficient number, since it is larger than the sum of its proper divisors (1).

68630839 is an equidigital number, since it uses as much as digits as its factorization.

68630839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 68630839 is about 8284.3731808749. The cubic root of 68630839 is about 409.4238168695.

The spelling of 68630839 in words is "sixty-eight million, six hundred thirty thousand, eight hundred thirty-nine".