68961311 has 2 divisors, whose sum is σ = 68961312. Its totient is φ = 68961310.

The previous prime is 68961283. The next prime is 68961313. The reversal of 68961311 is 11316986.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68961311 - 2¹⁴ = 68944927 is a prime.

Together with 68961313, 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 (68961313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34480655 + 34480656.

It is an arithmetic number, because the mean of its divisors is an integer number (34480656).

Almost surely, 2^68961311 is an apocalyptic number.

68961311 is a deficient number, since it is larger than the sum of its proper divisors (1).

68961311 is an equidigital number, since it uses as much as digits as its factorization.

68961311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 35.

The square root of 68961311 is about 8304.2947322455. The cubic root of 68961311 is about 410.0799189836.

The spelling of 68961311 in words is "sixty-eight million, nine hundred sixty-one thousand, three hundred eleven".