68439607 has 2 divisors, whose sum is σ = 68439608. Its totient is φ = 68439606.

The previous prime is 68439563. The next prime is 68439643. The reversal of 68439607 is 70693486.

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-68439607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68439667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34219803 + 34219804.

It is an arithmetic number, because the mean of its divisors is an integer number (34219804).

Almost surely, 2^68439607 is an apocalyptic number.

68439607 is a deficient number, since it is larger than the sum of its proper divisors (1).

68439607 is an equidigital number, since it uses as much as digits as its factorization.

68439607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 68439607 is about 8272.8233995414. The cubic root of 68439607 is about 409.0431922152.

The spelling of 68439607 in words is "sixty-eight million, four hundred thirty-nine thousand, six hundred seven".