68344979 has 2 divisors, whose sum is σ = 68344980. Its totient is φ = 68344978.

The previous prime is 68344961. The next prime is 68344993. The reversal of 68344979 is 97944386.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68344979 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68344379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34172489 + 34172490.

It is an arithmetic number, because the mean of its divisors is an integer number (34172490).

Almost surely, 2^68344979 is an apocalyptic number.

68344979 is a deficient number, since it is larger than the sum of its proper divisors (1).

68344979 is an equidigital number, since it uses as much as digits as its factorization.

68344979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 50.

The square root of 68344979 is about 8267.1022129885. The cubic root of 68344979 is about 408.8545841174.

The spelling of 68344979 in words is "sixty-eight million, three hundred forty-four thousand, nine hundred seventy-nine".