668983411 has 2 divisors, whose sum is σ = 668983412. Its totient is φ = 668983410.

The previous prime is 668983373. The next prime is 668983423. The reversal of 668983411 is 114389866.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 668983411 - 2¹¹ = 668981363 is a prime.

It is not a weakly prime, because it can be changed into another prime (668783411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334491705 + 334491706.

It is an arithmetic number, because the mean of its divisors is an integer number (334491706).

Almost surely, 2^668983411 is an apocalyptic number.

668983411 is a deficient number, since it is larger than the sum of its proper divisors (1).

668983411 is an equidigital number, since it uses as much as digits as its factorization.

668983411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 46.

The square root of 668983411 is about 25864.7136268701. The cubic root of 668983411 is about 874.5912260968.

It can be divided in two parts, 6689 and 83411, that added together give a triangular number (90100 = T₄₂₄).

The spelling of 668983411 in words is "six hundred sixty-eight million, nine hundred eighty-three thousand, four hundred eleven".