684768222 has 16 divisors (see below), whose sum is σ = 1521707280. Its totient is φ = 228256056.

The previous prime is 684768199. The next prime is 684768241. The reversal of 684768222 is 222867486.

It is a super-2 number, since 2×684768222² = 937815035722082568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6340393 + ... + 6340500.

It is an arithmetic number, because the mean of its divisors is an integer number (95106705).

Almost surely, 2^684768222 is an apocalyptic number.

684768222 is an abundant number, since it is smaller than the sum of its proper divisors (836939058).

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

684768222 is a wasteful number, since it uses less digits than its factorization.

684768222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12680904 (or 12680898 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 684768222 is about 26168.0763909004. The cubic root of 684768222 is about 881.4165468837.

The spelling of 684768222 in words is "six hundred eighty-four million, seven hundred sixty-eight thousand, two hundred twenty-two".