671037380 has 48 divisors (see below), whose sum is σ = 1569924720. Its totient is φ = 239221248.

The previous prime is 671037359. The next prime is 671037391. The reversal of 671037380 is 83730176.

It can be written as a sum of positive squares in 8 ways, for example, as 8386816 + 662650564 = 2896^2 + 25742^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 671037380.

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, 36959 + ... + 52038.

It is an arithmetic number, because the mean of its divisors is an integer number (32706765).

Almost surely, 2^671037380 is an apocalyptic number.

It is an amenable number.

671037380 is an abundant number, since it is smaller than the sum of its proper divisors (898887340).

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

671037380 is a wasteful number, since it uses less digits than its factorization.

671037380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89048 (or 89046 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 671037380 is about 25904.3892033763. The cubic root of 671037380 is about 875.4853927269.

The spelling of 671037380 in words is "six hundred seventy-one million, thirty-seven thousand, three hundred eighty".