68000039 has 2 divisors, whose sum is σ = 68000040. Its totient is φ = 68000038.

The previous prime is 68000021. The next prime is 68000047. The reversal of 68000039 is 93000086.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68000039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67999981 and 68000017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68000239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34000019 + 34000020.

It is an arithmetic number, because the mean of its divisors is an integer number (34000020).

Almost surely, 2^68000039 is an apocalyptic number.

68000039 is a deficient number, since it is larger than the sum of its proper divisors (1).

68000039 is an equidigital number, since it uses as much as digits as its factorization.

68000039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 68000039 is about 8246.2136159573. The cubic root of 68000039 is about 408.1655882234.

The spelling of 68000039 in words is "sixty-eight million, thirty-nine", and thus it is an aban number and an uban number.