668402703 has 12 divisors (see below), whose sum is σ = 965696160. Its totient is φ = 445497696.

The previous prime is 668402689. The next prime is 668402717. The reversal of 668402703 is 307204866.

668402703 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (668402689) and next prime (668402717).

It is not a de Polignac number, because 668402703 - 2⁵ = 668402671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668402783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64218 + ... + 73896.

It is an arithmetic number, because the mean of its divisors is an integer number (80474680).

Almost surely, 2^668402703 is an apocalyptic number.

668402703 is a deficient number, since it is larger than the sum of its proper divisors (297293457).

668402703 is a wasteful number, since it uses less digits than its factorization.

668402703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17358 (or 17355 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 668402703 is about 25853.4853162973. The cubic root of 668402703 is about 874.3380911963.

The spelling of 668402703 in words is "six hundred sixty-eight million, four hundred two thousand, seven hundred three".