671491032 has 16 divisors (see below), whose sum is σ = 1678727640. Its totient is φ = 223830336.

The previous prime is 671490991. The next prime is 671491033. The reversal of 671491032 is 230194176.

It is a junction number, because it is equal to n+sod(n) for n = 671490984 and 671491002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671491033) 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 3 ways as a sum of consecutive naturals, for example, 13989373 + ... + 13989420.

Almost surely, 2^671491032 is an apocalyptic number.

It is an amenable number.

671491032 is an abundant number, since it is smaller than the sum of its proper divisors (1007236608).

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

671491032 is a wasteful number, since it uses less digits than its factorization.

671491032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27978802 (or 27978798 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 671491032 is about 25913.1440006804. The cubic root of 671491032 is about 875.6826376912.

The spelling of 671491032 in words is "six hundred seventy-one million, four hundred ninety-one thousand, thirty-two".