671747032 has 64 divisors (see below), whose sum is σ = 1419327360. Its totient is φ = 295411200.

The previous prime is 671747017. The next prime is 671747051. The reversal of 671747032 is 230747176.

It is a junction number, because it is equal to n+sod(n) for n = 671746982 and 671747000.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 426807 + ... + 428377.

It is an arithmetic number, because the mean of its divisors is an integer number (22176990).

Almost surely, 2^671747032 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 671747032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (709663680).

671747032 is an abundant number, since it is smaller than the sum of its proper divisors (747580328).

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

671747032 is a wasteful number, since it uses less digits than its factorization.

671747032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744 (or 1740 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 671747032 is about 25918.0831081313. The cubic root of 671747032 is about 875.7939056320.

The spelling of 671747032 in words is "six hundred seventy-one million, seven hundred forty-seven thousand, thirty-two".