671791232 has 64 divisors (see below), whose sum is σ = 1566915840. Its totient is φ = 280872960.

The previous prime is 671791201. The next prime is 671791243. The reversal of 671791232 is 232197176.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27593 + ... + 45879.

It is an arithmetic number, because the mean of its divisors is an integer number (24483060).

Almost surely, 2^671791232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671791232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (783457920).

671791232 is an abundant number, since it is smaller than the sum of its proper divisors (895124608).

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

671791232 is a wasteful number, since it uses less digits than its factorization.

671791232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18349 (or 18337 counting only the distinct ones).

The product of its digits is 31752, while the sum is 38.

The square root of 671791232 is about 25918.9357806219. The cubic root of 671791232 is about 875.8131138755.

The spelling of 671791232 in words is "six hundred seventy-one million, seven hundred ninety-one thousand, two hundred thirty-two".