268716636 has 48 divisors (see below), whose sum is σ = 726969600. Its totient is φ = 85676976.

The previous prime is 268716629. The next prime is 268716653. The reversal of 268716636 is 636617862.

268716636 is a `hidden beast` number, since 2 + 6 + 8 + 7 + 1 + 6 + 636 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 268716591 and 268716600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51606 + ... + 56573.

It is an arithmetic number, because the mean of its divisors is an integer number (15145200).

Almost surely, 2^268716636 is an apocalyptic number.

It is an amenable number.

268716636 is an abundant number, since it is smaller than the sum of its proper divisors (458252964).

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

268716636 is a wasteful number, since it uses less digits than its factorization.

268716636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108215 (or 108207 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 268716636 is about 16392.5786867106. The cubic root of 268716636 is about 645.3047343163.

The spelling of 268716636 in words is "two hundred sixty-eight million, seven hundred sixteen thousand, six hundred thirty-six".