68631359 has 2 divisors, whose sum is σ = 68631360. Its totient is φ = 68631358.

The previous prime is 68631331. The next prime is 68631361. The reversal of 68631359 is 95313686.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68631359 - 2¹² = 68627263 is a prime.

Together with 68631361, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68631259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34315679 + 34315680.

It is an arithmetic number, because the mean of its divisors is an integer number (34315680).

Almost surely, 2^68631359 is an apocalyptic number.

68631359 is a deficient number, since it is larger than the sum of its proper divisors (1).

68631359 is an equidigital number, since it uses as much as digits as its factorization.

68631359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 41.

The square root of 68631359 is about 8284.4045652056. The cubic root of 68631359 is about 409.4248509034.

The spelling of 68631359 in words is "sixty-eight million, six hundred thirty-one thousand, three hundred fifty-nine".