684223076 has 12 divisors (see below), whose sum is σ = 1198876140. Its totient is φ = 341687040.

The previous prime is 684223061. The next prime is 684223097. The reversal of 684223076 is 670322486.

It can be written as a sum of positive squares in 2 ways, for example, as 265038400 + 419184676 = 16280^2 + 20474^2 .

It is a super-2 number, since 2×684223076² = 936322435461803552, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102485 + ... + 108956.

It is an arithmetic number, because the mean of its divisors is an integer number (99906345).

Almost surely, 2^684223076 is an apocalyptic number.

It is an amenable number.

684223076 is a deficient number, since it is larger than the sum of its proper divisors (514653064).

684223076 is a wasteful number, since it uses less digits than its factorization.

684223076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212254 (or 212252 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 684223076 is about 26157.6580756000. The cubic root of 684223076 is about 881.1825853498.

The spelling of 684223076 in words is "six hundred eighty-four million, two hundred twenty-three thousand, seventy-six".