68607839 has 2 divisors, whose sum is σ = 68607840. Its totient is φ = 68607838.

The previous prime is 68607793. The next prime is 68607863. The reversal of 68607839 is 93870686.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68607839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68607793 and 68607802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68607899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34303919 + 34303920.

It is an arithmetic number, because the mean of its divisors is an integer number (34303920).

Almost surely, 2^68607839 is an apocalyptic number.

68607839 is a deficient number, since it is larger than the sum of its proper divisors (1).

68607839 is an equidigital number, since it uses as much as digits as its factorization.

68607839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 68607839 is about 8282.9849088357. The cubic root of 68607839 is about 409.3780755280.

The spelling of 68607839 in words is "sixty-eight million, six hundred seven thousand, eight hundred thirty-nine".