68665433 has 2 divisors, whose sum is σ = 68665434. Its totient is φ = 68665432.

The previous prime is 68665423. The next prime is 68665469. The reversal of 68665433 is 33456686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61418569 + 7246864 = 7837^2 + 2692^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68665433 is a prime.

It is not a weakly prime, because it can be changed into another prime (68665423) 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, 34332716 + 34332717.

It is an arithmetic number, because the mean of its divisors is an integer number (34332717).

Almost surely, 2^68665433 is an apocalyptic number.

It is an amenable number.

68665433 is a deficient number, since it is larger than the sum of its proper divisors (1).

68665433 is an equidigital number, since it uses as much as digits as its factorization.

68665433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 41.

The square root of 68665433 is about 8286.4608247430. The cubic root of 68665433 is about 409.4925965834.

The spelling of 68665433 in words is "sixty-eight million, six hundred sixty-five thousand, four hundred thirty-three".