684173712 has 20 divisors (see below), whose sum is σ = 1767448880. Its totient is φ = 228057888.

The previous prime is 684173681. The next prime is 684173719. The reversal of 684173712 is 217371486.

It is not an unprimeable number, because it can be changed into a prime (684173719) 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, 7126762 + ... + 7126857.

It is an arithmetic number, because the mean of its divisors is an integer number (88372444).

Almost surely, 2^684173712 is an apocalyptic number.

It is an amenable number.

684173712 is an abundant number, since it is smaller than the sum of its proper divisors (1083275168).

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

684173712 is a wasteful number, since it uses less digits than its factorization.

684173712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14253630 (or 14253624 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 684173712 is about 26156.7144725785. The cubic root of 684173712 is about 881.1613935559.

The spelling of 684173712 in words is "six hundred eighty-four million, one hundred seventy-three thousand, seven hundred twelve".