268308684 has 72 divisors (see below), whose sum is σ = 789778080. Its totient is φ = 75209472.

The previous prime is 268308659. The next prime is 268308697. The reversal of 268308684 is 486803862.

It is a happy number.

268308684 is a `hidden beast` number, since 268 + 308 + 6 + 84 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3312 + ... + 23400.

It is an arithmetic number, because the mean of its divisors is an integer number (10969140).

Almost surely, 2^268308684 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 268308684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394889040).

268308684 is an abundant number, since it is smaller than the sum of its proper divisors (521469396).

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

268308684 is a wasteful number, since it uses less digits than its factorization.

268308684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20159 (or 20154 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The square root of 268308684 is about 16380.1307687088. The cubic root of 268308684 is about 644.9780125910.

The spelling of 268308684 in words is "two hundred sixty-eight million, three hundred eight thousand, six hundred eighty-four".