68121359 has 2 divisors, whose sum is σ = 68121360. Its totient is φ = 68121358.

The previous prime is 68121343. The next prime is 68121367. The reversal of 68121359 is 95312186.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68121359 - 2⁴ = 68121343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68121959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34060679 + 34060680.

It is an arithmetic number, because the mean of its divisors is an integer number (34060680).

Almost surely, 2^68121359 is an apocalyptic number.

68121359 is a deficient number, since it is larger than the sum of its proper divisors (1).

68121359 is an equidigital number, since it uses as much as digits as its factorization.

68121359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 35.

The square root of 68121359 is about 8253.5664412422. The cubic root of 68121359 is about 408.4081823455.

The spelling of 68121359 in words is "sixty-eight million, one hundred twenty-one thousand, three hundred fifty-nine".