68680279 has 2 divisors, whose sum is σ = 68680280. Its totient is φ = 68680278.

The previous prime is 68680267. The next prime is 68680291. The reversal of 68680279 is 97208686.

It is a balanced prime because it is at equal distance from previous prime (68680267) and next prime (68680291).

It is a cyclic number.

It is not a de Polignac number, because 68680279 - 2⁵ = 68680247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68680379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34340139 + 34340140.

It is an arithmetic number, because the mean of its divisors is an integer number (34340140).

Almost surely, 2^68680279 is an apocalyptic number.

68680279 is a deficient number, since it is larger than the sum of its proper divisors (1).

68680279 is an equidigital number, since it uses as much as digits as its factorization.

68680279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 68680279 is about 8287.3565749279. The cubic root of 68680279 is about 409.5221062835.

The spelling of 68680279 in words is "sixty-eight million, six hundred eighty thousand, two hundred seventy-nine".