668287371 has 8 divisors (see below), whose sum is σ = 896028480. Its totient is φ = 443035592.

The previous prime is 668287369. The next prime is 668287387. The reversal of 668287371 is 173782866.

668287371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 668287371 - 2¹ = 668287369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 668287371.

It is not an unprimeable number, because it can be changed into a prime (668287271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 621705 + ... + 622778.

It is an arithmetic number, because the mean of its divisors is an integer number (112003560).

Almost surely, 2^668287371 is an apocalyptic number.

668287371 is a deficient number, since it is larger than the sum of its proper divisors (227741109).

668287371 is a wasteful number, since it uses less digits than its factorization.

668287371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244665.

The product of its digits is 677376, while the sum is 48.

The square root of 668287371 is about 25851.2547277690. The cubic root of 668287371 is about 874.2877996775.

The spelling of 668287371 in words is "six hundred sixty-eight million, two hundred eighty-seven thousand, three hundred seventy-one".