684422676 has 192 divisors, whose sum is σ = 2113413120. Its totient is φ = 187488000.

The previous prime is 684422671. The next prime is 684422699. The reversal of 684422676 is 676224486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684422671) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2200561 + ... + 2200871.

It is an arithmetic number, because the mean of its divisors is an integer number (11007360).

Almost surely, 2^684422676 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 684422676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1056706560).

684422676 is an abundant number, since it is smaller than the sum of its proper divisors (1428990444).

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

684422676 is a wasteful number, since it uses less digits than its factorization.

684422676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 435 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The square root of 684422676 is about 26161.4731236603. The cubic root of 684422676 is about 881.2682625459.

The spelling of 684422676 in words is "six hundred eighty-four million, four hundred twenty-two thousand, six hundred seventy-six".