68816933 has 2 divisors, whose sum is σ = 68816934. Its totient is φ = 68816932.

The previous prime is 68816903. The next prime is 68816947. The reversal of 68816933 is 33961886.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43586404 + 25230529 = 6602^2 + 5023^2 .

It is a cyclic number.

It is not a de Polignac number, because 68816933 - 2¹⁰ = 68815909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68816903) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34408466 + 34408467.

It is an arithmetic number, because the mean of its divisors is an integer number (34408467).

Almost surely, 2^68816933 is an apocalyptic number.

It is an amenable number.

68816933 is a deficient number, since it is larger than the sum of its proper divisors (1).

68816933 is an equidigital number, since it uses as much as digits as its factorization.

68816933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 44.

The square root of 68816933 is about 8295.5972057472. The cubic root of 68816933 is about 409.7935367390.

The spelling of 68816933 in words is "sixty-eight million, eight hundred sixteen thousand, nine hundred thirty-three".