668470337 has 4 divisors (see below), whose sum is σ = 673573296. Its totient is φ = 663367380.

The previous prime is 668470289. The next prime is 668470339. The reversal of 668470337 is 733074866.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 668470337 - 2¹⁰ = 668469313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (668470339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2551283 + ... + 2551544.

It is an arithmetic number, because the mean of its divisors is an integer number (168393324).

Almost surely, 2^668470337 is an apocalyptic number.

It is an amenable number.

668470337 is a deficient number, since it is larger than the sum of its proper divisors (5102959).

668470337 is a wasteful number, since it uses less digits than its factorization.

668470337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5102958.

The product of its (nonzero) digits is 508032, while the sum is 44.

The square root of 668470337 is about 25854.7933080116. The cubic root of 668470337 is about 874.3675808975.

The spelling of 668470337 in words is "six hundred sixty-eight million, four hundred seventy thousand, three hundred thirty-seven".