668183167 has 4 divisors (see below), whose sum is σ = 668411640. Its totient is φ = 667954696.

The previous prime is 668183141. The next prime is 668183183. The reversal of 668183167 is 761381866.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 668183167 - 2²³ = 659794559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668183267) 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, 109792 + ... + 115717.

It is an arithmetic number, because the mean of its divisors is an integer number (167102910).

Almost surely, 2^668183167 is an apocalyptic number.

668183167 is a deficient number, since it is larger than the sum of its proper divisors (228473).

668183167 is a wasteful number, since it uses less digits than its factorization.

668183167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228472.

The product of its digits is 290304, while the sum is 46.

The square root of 668183167 is about 25849.2391957674. The cubic root of 668183167 is about 874.2423556438.

The spelling of 668183167 in words is "six hundred sixty-eight million, one hundred eighty-three thousand, one hundred sixty-seven".