671722132 has 24 divisors (see below), whose sum is σ = 1186002272. Its totient is φ = 332877600.

The previous prime is 671722127. The next prime is 671722133. The reversal of 671722132 is 231227176.

It is a junction number, because it is equal to n+sod(n) for n = 671722094 and 671722103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671722133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238243 + ... + 241045.

Almost surely, 2^671722132 is an apocalyptic number.

It is an amenable number.

671722132 is a deficient number, since it is larger than the sum of its proper divisors (514280140).

671722132 is a wasteful number, since it uses less digits than its factorization.

671722132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3319 (or 3317 counting only the distinct ones).

The product of its digits is 7056, while the sum is 31.

The square root of 671722132 is about 25917.6027440811. The cubic root of 671722132 is about 875.7830843274.

The spelling of 671722132 in words is "six hundred seventy-one million, seven hundred twenty-two thousand, one hundred thirty-two".