68213039 has 2 divisors, whose sum is σ = 68213040. Its totient is φ = 68213038.

The previous prime is 68212997. The next prime is 68213063. The reversal of 68213039 is 93031286.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68213039 - 2¹⁶ = 68147503 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 68212996 and 68213014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68213069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34106519 + 34106520.

It is an arithmetic number, because the mean of its divisors is an integer number (34106520).

Almost surely, 2^68213039 is an apocalyptic number.

68213039 is a deficient number, since it is larger than the sum of its proper divisors (1).

68213039 is an equidigital number, since it uses as much as digits as its factorization.

68213039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 68213039 is about 8259.1185365025. The cubic root of 68213039 is about 408.5913166711.

The spelling of 68213039 in words is "sixty-eight million, two hundred thirteen thousand, thirty-nine".