68711579 has 2 divisors, whose sum is σ = 68711580. Its totient is φ = 68711578.

The previous prime is 68711561. The next prime is 68711597. The reversal of 68711579 is 97511786.

Together with next prime (68711597) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (68711561) and next prime (68711597).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68711579 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68711519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34355789 + 34355790.

It is an arithmetic number, because the mean of its divisors is an integer number (34355790).

Almost surely, 2^68711579 is an apocalyptic number.

68711579 is a deficient number, since it is larger than the sum of its proper divisors (1).

68711579 is an equidigital number, since it uses as much as digits as its factorization.

68711579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 44.

The square root of 68711579 is about 8289.2447786273. The cubic root of 68711579 is about 409.5843080072.

The spelling of 68711579 in words is "sixty-eight million, seven hundred eleven thousand, five hundred seventy-nine".