671979222 has 12 divisors (see below), whose sum is σ = 1455955020. Its totient is φ = 223993068.

The previous prime is 671979197. The next prime is 671979227. The reversal of 671979222 is 222979176.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671979227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18666072 + ... + 18666107.

It is an arithmetic number, because the mean of its divisors is an integer number (121329585).

Almost surely, 2^671979222 is an apocalyptic number.

671979222 is an abundant number, since it is smaller than the sum of its proper divisors (783975798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671979222 is a wasteful number, since it uses less digits than its factorization.

671979222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37332187 (or 37332184 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 671979222 is about 25922.5620261578. The cubic root of 671979222 is about 875.8948003400.

The spelling of 671979222 in words is "six hundred seventy-one million, nine hundred seventy-nine thousand, two hundred twenty-two".