684816676 has 12 divisors (see below), whose sum is σ = 1199645440. Its totient is φ = 342060840.

The previous prime is 684816673. The next prime is 684816679. The reversal of 684816676 is 676618486.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (684816673) and next prime (684816679).

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (684816673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82416 + ... + 90343.

Almost surely, 2^684816676 is an apocalyptic number.

It is an amenable number.

684816676 is a deficient number, since it is larger than the sum of its proper divisors (514828764).

684816676 is a wasteful number, since it uses less digits than its factorization.

684816676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173754 (or 173752 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The square root of 684816676 is about 26169.0021972562. The cubic root of 684816676 is about 881.4373359861.

It can be divided in two parts, 68481 and 6676, that added together give a palindrome (75157).

The spelling of 684816676 in words is "six hundred eighty-four million, eight hundred sixteen thousand, six hundred seventy-six".