68979199 has 2 divisors, whose sum is σ = 68979200. Its totient is φ = 68979198.

The previous prime is 68979191. The next prime is 68979223. The reversal of 68979199 is 99197986.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68979199 - 2³ = 68979191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68979191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34489599 + 34489600.

It is an arithmetic number, because the mean of its divisors is an integer number (34489600).

Almost surely, 2^68979199 is an apocalyptic number.

68979199 is a deficient number, since it is larger than the sum of its proper divisors (1).

68979199 is an equidigital number, since it uses as much as digits as its factorization.

68979199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2204496, while the sum is 58.

The square root of 68979199 is about 8305.3716954752. The cubic root of 68979199 is about 410.1153730438.

The spelling of 68979199 in words is "sixty-eight million, nine hundred seventy-nine thousand, one hundred ninety-nine".