671736912 has 160 divisors (see below), whose sum is σ = 2290996224. Its totient is φ = 164198400.

The previous prime is 671736899. The next prime is 671736991. The reversal of 671736912 is 219637176.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57487 + ... + 68177.

Almost surely, 2^671736912 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 671736912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1145498112).

671736912 is an abundant number, since it is smaller than the sum of its proper divisors (1619259312).

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

671736912 is a wasteful number, since it uses less digits than its factorization.

671736912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10737 (or 10731 counting only the distinct ones).

The product of its digits is 95256, while the sum is 42.

The square root of 671736912 is about 25917.8878769085. The cubic root of 671736912 is about 875.7895076079.

The spelling of 671736912 in words is "six hundred seventy-one million, seven hundred thirty-six thousand, nine hundred twelve".