268221705 has 8 divisors (see below), whose sum is σ = 429154752. Its totient is φ = 143051568.

The previous prime is 268221683. The next prime is 268221719. The reversal of 268221705 is 507122862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 268221705 - 2¹⁴ = 268205321 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8940709 + ... + 8940738.

It is an arithmetic number, because the mean of its divisors is an integer number (53644344).

Almost surely, 2^268221705 is an apocalyptic number.

It is an amenable number.

268221705 is a deficient number, since it is larger than the sum of its proper divisors (160933047).

268221705 is a wasteful number, since it uses less digits than its factorization.

268221705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17881455.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 268221705 is about 16377.4755380675. The cubic root of 268221705 is about 644.9083097835.

The spelling of 268221705 in words is "two hundred sixty-eight million, two hundred twenty-one thousand, seven hundred five".