668276673 has 8 divisors (see below), whose sum is σ = 891903936. Its totient is φ = 445083600.

The previous prime is 668276633. The next prime is 668276699. The reversal of 668276673 is 376672866.

It is a happy number.

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

It is not a de Polignac number, because 668276673 - 2²⁸ = 399841217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (668276603) 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, 104938 + ... + 111123.

It is an arithmetic number, because the mean of its divisors is an integer number (111487992).

Almost surely, 2^668276673 is an apocalyptic number.

It is an amenable number.

668276673 is a deficient number, since it is larger than the sum of its proper divisors (223627263).

668276673 is a wasteful number, since it uses less digits than its factorization.

668276673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217095.

The product of its digits is 3048192, while the sum is 51.

The square root of 668276673 is about 25851.0478124195. The cubic root of 668276673 is about 874.2831344286.

The spelling of 668276673 in words is "six hundred sixty-eight million, two hundred seventy-six thousand, six hundred seventy-three".