684077244 has 24 divisors (see below), whose sum is σ = 1596604800. Its totient is φ = 227965104.

The previous prime is 684077243. The next prime is 684077267. The reversal of 684077244 is 442770486.

It is a junction number, because it is equal to n+sod(n) for n = 684077196 and 684077205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684077243) 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 7 ways as a sum of consecutive naturals, for example, 78657 + ... + 86919.

It is an arithmetic number, because the mean of its divisors is an integer number (66525200).

Almost surely, 2^684077244 is an apocalyptic number.

It is an amenable number.

684077244 is an abundant number, since it is smaller than the sum of its proper divisors (912527556).

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

684077244 is a wasteful number, since it uses less digits than its factorization.

684077244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15169 (or 15167 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 42.

The square root of 684077244 is about 26154.8703686331. The cubic root of 684077244 is about 881.1199772356.

The spelling of 684077244 in words is "six hundred eighty-four million, seventy-seven thousand, two hundred forty-four".