671678240 has 96 divisors (see below), whose sum is σ = 1648926720. Its totient is φ = 258278400.

The previous prime is 671678237. The next prime is 671678263. The reversal of 671678240 is 42876176.

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, 947006 + ... + 947714.

It is an arithmetic number, because the mean of its divisors is an integer number (17176320).

Almost surely, 2^671678240 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 671678240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (824463360).

671678240 is an abundant number, since it is smaller than the sum of its proper divisors (977248480).

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

671678240 is a wasteful number, since it uses less digits than its factorization.

671678240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946 (or 938 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 671678240 is about 25916.7559698354. The cubic root of 671678240 is about 875.7640086280.

The spelling of 671678240 in words is "six hundred seventy-one million, six hundred seventy-eight thousand, two hundred forty".