68704859 has 2 divisors, whose sum is σ = 68704860. Its totient is φ = 68704858.

The previous prime is 68704843. The next prime is 68704861. The reversal of 68704859 is 95840786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68704859 - 2⁴ = 68704843 is a prime.

Together with 68704861, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68704829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34352429 + 34352430.

It is an arithmetic number, because the mean of its divisors is an integer number (34352430).

Almost surely, 2^68704859 is an apocalyptic number.

68704859 is a deficient number, since it is larger than the sum of its proper divisors (1).

68704859 is an equidigital number, since it uses as much as digits as its factorization.

68704859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 68704859 is about 8288.8394241896. The cubic root of 68704859 is about 409.5709551084.

The spelling of 68704859 in words is "sixty-eight million, seven hundred four thousand, eight hundred fifty-nine".