68467979 has 2 divisors, whose sum is σ = 68467980. Its totient is φ = 68467978.

The previous prime is 68467951. The next prime is 68467999. The reversal of 68467979 is 97976486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68467979 - 2¹⁶ = 68402443 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68467999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34233989 + 34233990.

It is an arithmetic number, because the mean of its divisors is an integer number (34233990).

Almost surely, 2^68467979 is an apocalyptic number.

68467979 is a deficient number, since it is larger than the sum of its proper divisors (1).

68467979 is an equidigital number, since it uses as much as digits as its factorization.

68467979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 56.

The square root of 68467979 is about 8274.5379931450. The cubic root of 68467979 is about 409.0997080771.

The spelling of 68467979 in words is "sixty-eight million, four hundred sixty-seven thousand, nine hundred seventy-nine".