671591532 has 48 divisors (see below), whose sum is σ = 1597760640. Its totient is φ = 219512448.

The previous prime is 671591491. The next prime is 671591573. The reversal of 671591532 is 235195176.

It is an interprime number because it is at equal distance from previous prime (671591491) and next prime (671591573).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154663 + ... + 158945.

It is an arithmetic number, because the mean of its divisors is an integer number (33286680).

Almost surely, 2^671591532 is an apocalyptic number.

It is an amenable number.

671591532 is an abundant number, since it is smaller than the sum of its proper divisors (926169108).

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

671591532 is a wasteful number, since it uses less digits than its factorization.

671591532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4542 (or 4540 counting only the distinct ones).

The product of its digits is 56700, while the sum is 39.

The square root of 671591532 is about 25915.0830984583. The cubic root of 671591532 is about 875.7263224221.

The spelling of 671591532 in words is "six hundred seventy-one million, five hundred ninety-one thousand, five hundred thirty-two".