684173682 has 64 divisors (see below), whose sum is σ = 1553769600. Its totient is φ = 223093440.

The previous prime is 684173681. The next prime is 684173719. The reversal of 684173682 is 286371486.

684173682 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (684173681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 753873 + ... + 754779.

It is an arithmetic number, because the mean of its divisors is an integer number (24277650).

Almost surely, 2^684173682 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 684173682, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (776884800).

684173682 is an abundant number, since it is smaller than the sum of its proper divisors (869595918).

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

684173682 is a wasteful number, since it uses less digits than its factorization.

684173682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1208 (or 1202 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 684173682 is about 26156.7138991120. The cubic root of 684173682 is about 881.1613806767.

The spelling of 684173682 in words is "six hundred eighty-four million, one hundred seventy-three thousand, six hundred eighty-two".