671499804 has 48 divisors (see below), whose sum is σ = 1656861696. Its totient is φ = 211324800.

The previous prime is 671499737. The next prime is 671499821. The reversal of 671499804 is 408994176.

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, 6762 + ... + 37265.

It is an arithmetic number, because the mean of its divisors is an integer number (34517952).

Almost surely, 2^671499804 is an apocalyptic number.

It is an amenable number.

671499804 is an abundant number, since it is smaller than the sum of its proper divisors (985361892).

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

671499804 is a wasteful number, since it uses less digits than its factorization.

671499804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44106 (or 44104 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 671499804 is about 25913.3132578603. The cubic root of 671499804 is about 875.6864508246.

The spelling of 671499804 in words is "six hundred seventy-one million, four hundred ninety-nine thousand, eight hundred four".