671343040 has 112 divisors (see below), whose sum is σ = 1678106880. Its totient is φ = 255467520.

The previous prime is 671342981. The next prime is 671343089. The reversal of 671343040 is 40343176.

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, 676945 + ... + 677935.

Almost surely, 2^671343040 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 671343040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (839053440).

671343040 is an abundant number, since it is smaller than the sum of its proper divisors (1006763840).

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

671343040 is a wasteful number, since it uses less digits than its factorization.

671343040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110 (or 1100 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 671343040 is about 25910.2883040695. The cubic root of 671343040 is about 875.6183014899.

The spelling of 671343040 in words is "six hundred seventy-one million, three hundred forty-three thousand, forty".