671682056 has 16 divisors (see below), whose sum is σ = 1261915200. Its totient is φ = 335171344.

The previous prime is 671682047. The next prime is 671682073. The reversal of 671682056 is 650286176.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79436 + ... + 87483.

It is an arithmetic number, because the mean of its divisors is an integer number (78869700).

Almost surely, 2^671682056 is an apocalyptic number.

It is an amenable number.

671682056 is a deficient number, since it is larger than the sum of its proper divisors (590233144).

671682056 is a wasteful number, since it uses less digits than its factorization.

671682056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167428 (or 167424 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 671682056 is about 25916.8295900560. The cubic root of 671682056 is about 875.7656671151.

The spelling of 671682056 in words is "six hundred seventy-one million, six hundred eighty-two thousand, fifty-six".