684531188496 has 45 divisors (see below), whose sum is σ = 1915764376071. Its totient is φ = 228173753376.

The previous prime is 684531188443. The next prime is 684531188503. The reversal of 684531188496 is 694881135486.

The square root of 684531188496 is 827364.

It is a perfect power (a square), and thus also a powerful number.

684531188496 is a `hidden beast` number, since 6 + 8 + 4 + 53 + 11 + 88 + 496 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9893895 + ... + 9962841.

Almost surely, 2^684531188496 is an apocalyptic number.

684531188496 is the 827364-th square number.

It is an amenable number.

684531188496 is an abundant number, since it is smaller than the sum of its proper divisors (1231233187575).

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

684531188496 is an frugal number, since it uses more digits than its factorization.

684531188496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137908 (or 68952 counting only the distinct ones).

The product of its digits is 39813120, while the sum is 63.

The spelling of 684531188496 in words is "six hundred eighty-four billion, five hundred thirty-one million, one hundred eighty-eight thousand, four hundred ninety-six".