671130040 has 64 divisors (see below), whose sum is σ = 1733529600. Its totient is φ = 229066368.

The previous prime is 671130023. The next prime is 671130059. The reversal of 671130040 is 40031176.

It is a junction number, because it is equal to n+sod(n) for n = 671129993 and 671130020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58281 + ... + 68839.

It is an arithmetic number, because the mean of its divisors is an integer number (27086400).

Almost surely, 2^671130040 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 671130040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (866764800).

671130040 is an abundant number, since it is smaller than the sum of its proper divisors (1062399560).

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

671130040 is a wasteful number, since it uses less digits than its factorization.

671130040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10804 (or 10800 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 671130040 is about 25906.1776416360. The cubic root of 671130040 is about 875.5256879202.

The spelling of 671130040 in words is "six hundred seventy-one million, one hundred thirty thousand, forty".