668430701 has 6 divisors (see below), whose sum is σ = 710063370. Its totient is φ = 629110976.

The previous prime is 668430691. The next prime is 668430703. The reversal of 668430701 is 107034866.

It can be written as a sum of positive squares in 3 ways, for example, as 105555076 + 562875625 = 10274^2 + 23725^2 .

It is not a de Polignac number, because 668430701 - 2²⁶ = 601321837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668430703) 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 in 5 ways as a sum of consecutive naturals, for example, 1156166 + ... + 1156743.

It is an arithmetic number, because the mean of its divisors is an integer number (118343895).

Almost surely, 2^668430701 is an apocalyptic number.

It is an amenable number.

668430701 is a deficient number, since it is larger than the sum of its proper divisors (41632669).

668430701 is a wasteful number, since it uses less digits than its factorization.

668430701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2312943 (or 2312926 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 668430701 is about 25854.0267850097. The cubic root of 668430701 is about 874.3502990943.

The spelling of 668430701 in words is "six hundred sixty-eight million, four hundred thirty thousand, seven hundred one".