668887103 has 2 divisors, whose sum is σ = 668887104. Its totient is φ = 668887102.

The previous prime is 668887069. The next prime is 668887159. The reversal of 668887103 is 301788866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 668887103 - 2¹⁶ = 668821567 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (668887003) 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, 334443551 + 334443552.

It is an arithmetic number, because the mean of its divisors is an integer number (334443552).

Almost surely, 2^668887103 is an apocalyptic number.

668887103 is a deficient number, since it is larger than the sum of its proper divisors (1).

668887103 is an equidigital number, since it uses as much as digits as its factorization.

668887103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 668887103 is about 25862.8517955774. The cubic root of 668887103 is about 874.5492548646.

The spelling of 668887103 in words is "six hundred sixty-eight million, eight hundred eighty-seven thousand, one hundred three".