671849580 has 24 divisors (see below), whose sum is σ = 1881178992. Its totient is φ = 179159872.

The previous prime is 671849569. The next prime is 671849593. The reversal of 671849580 is 85948176.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5598687 + ... + 5598806.

It is an arithmetic number, because the mean of its divisors is an integer number (78382458).

Almost surely, 2^671849580 is an apocalyptic number.

671849580 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

671849580 is an abundant number, since it is smaller than the sum of its proper divisors (1209329412).

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

671849580 is a wasteful number, since it uses less digits than its factorization.

671849580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11197505 (or 11197503 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 671849580 is about 25920.0613425200. The cubic root of 671849580 is about 875.8384692050.

The spelling of 671849580 in words is "six hundred seventy-one million, eight hundred forty-nine thousand, five hundred eighty".