68908387 has 2 divisors, whose sum is σ = 68908388. Its totient is φ = 68908386.

The previous prime is 68908363. The next prime is 68908409. The reversal of 68908387 is 78380986.

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-68908387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68908387.

It is not a weakly prime, because it can be changed into another prime (68908337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34454193 + 34454194.

It is an arithmetic number, because the mean of its divisors is an integer number (34454194).

Almost surely, 2^68908387 is an apocalyptic number.

68908387 is a deficient number, since it is larger than the sum of its proper divisors (1).

68908387 is an equidigital number, since it uses as much as digits as its factorization.

68908387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 68908387 is about 8301.1075767032. The cubic root of 68908387 is about 409.9749875679.

The spelling of 68908387 in words is "sixty-eight million, nine hundred eight thousand, three hundred eighty-seven".