669926163 has 4 divisors (see below), whose sum is σ = 893234888. Its totient is φ = 446617440.

The previous prime is 669926161. The next prime is 669926171. The reversal of 669926163 is 361629966.

It is a happy number.

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

It is not a de Polignac number, because 669926163 - 2¹ = 669926161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669926161) 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, 111654358 + ... + 111654363.

It is an arithmetic number, because the mean of its divisors is an integer number (223308722).

Almost surely, 2^669926163 is an apocalyptic number.

669926163 is a deficient number, since it is larger than the sum of its proper divisors (223308725).

669926163 is a wasteful number, since it uses less digits than its factorization.

669926163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223308724.

The product of its digits is 629856, while the sum is 48.

The square root of 669926163 is about 25882.9318857041. The cubic root of 669926163 is about 875.0018668804.

The spelling of 669926163 in words is "six hundred sixty-nine million, nine hundred twenty-six thousand, one hundred sixty-three".