684484312 has 32 divisors (see below), whose sum is σ = 1346166720. Its totient is φ = 325900800.

The previous prime is 684484271. The next prime is 684484319. The reversal of 684484312 is 213484486.

It is a happy number.

It is a super-2 number, since 2×684484312² = 937037546748226688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684484319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10689 + ... + 38512.

It is an arithmetic number, because the mean of its divisors is an integer number (42067710).

Almost surely, 2^684484312 is an apocalyptic number.

It is an amenable number.

684484312 is a deficient number, since it is larger than the sum of its proper divisors (661682408).

684484312 is a wasteful number, since it uses less digits than its factorization.

684484312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49291 (or 49287 counting only the distinct ones).

The product of its digits is 147456, while the sum is 40.

The square root of 684484312 is about 26162.6510889092. The cubic root of 684484312 is about 881.2947160919.

The spelling of 684484312 in words is "six hundred eighty-four million, four hundred eighty-four thousand, three hundred twelve".