68079929 has 2 divisors, whose sum is σ = 68079930. Its totient is φ = 68079928.

The previous prime is 68079919. The next prime is 68079961. The reversal of 68079929 is 92997086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67897600 + 182329 = 8240^2 + 427^2 .

It is a cyclic number.

It is not a de Polignac number, because 68079929 - 2¹⁶ = 68014393 is a prime.

It is not a weakly prime, because it can be changed into another prime (68079919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34039964 + 34039965.

It is an arithmetic number, because the mean of its divisors is an integer number (34039965).

Almost surely, 2^68079929 is an apocalyptic number.

It is an amenable number.

68079929 is a deficient number, since it is larger than the sum of its proper divisors (1).

68079929 is an equidigital number, since it uses as much as digits as its factorization.

68079929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 68079929 is about 8251.0562354162. The cubic root of 68079929 is about 408.3253704218.

The spelling of 68079929 in words is "sixty-eight million, seventy-nine thousand, nine hundred twenty-nine".