268881647 has 4 divisors (see below), whose sum is σ = 268915080. Its totient is φ = 268848216.

The previous prime is 268881643. The next prime is 268881719. The reversal of 268881647 is 746188862.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 268881647 - 2² = 268881643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268881595 and 268881604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268881643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3488 + ... + 23450.

It is an arithmetic number, because the mean of its divisors is an integer number (67228770).

Almost surely, 2^268881647 is an apocalyptic number.

268881647 is a deficient number, since it is larger than the sum of its proper divisors (33433).

268881647 is a wasteful number, since it uses less digits than its factorization.

268881647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33432.

The product of its digits is 1032192, while the sum is 50.

The square root of 268881647 is about 16397.6110150229. The cubic root of 268881647 is about 645.4367948549.

The spelling of 268881647 in words is "two hundred sixty-eight million, eight hundred eighty-one thousand, six hundred forty-seven".