531684856 has 16 divisors (see below), whose sum is σ = 998262000. Its totient is φ = 265481664.

The previous prime is 531684833. The next prime is 531684863. The reversal of 531684856 is 658486135.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38781 + ... + 50668.

It is an arithmetic number, because the mean of its divisors is an integer number (62391375).

Almost surely, 2^531684856 is an apocalyptic number.

It is an amenable number.

531684856 is a deficient number, since it is larger than the sum of its proper divisors (466577144).

531684856 is a wasteful number, since it uses less digits than its factorization.

531684856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90198 (or 90194 counting only the distinct ones).

The product of its digits is 691200, while the sum is 46.

The square root of 531684856 is about 23058.2925647152. The cubic root of 531684856 is about 810.1238727384.

The spelling of 531684856 in words is "five hundred thirty-one million, six hundred eighty-four thousand, eight hundred fifty-six".