268961786 has 4 divisors (see below), whose sum is σ = 403442682. Its totient is φ = 134480892.

The previous prime is 268961761. The next prime is 268961801. The reversal of 268961786 is 687169862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 154878025 + 114083761 = 12445^2 + 10681^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67240445 + ... + 67240448.

Almost surely, 2^268961786 is an apocalyptic number.

268961786 is a deficient number, since it is larger than the sum of its proper divisors (134480896).

268961786 is a wasteful number, since it uses less digits than its factorization.

268961786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134480895.

The product of its digits is 1741824, while the sum is 53.

The square root of 268961786 is about 16400.0544511291. The cubic root of 268961786 is about 645.5009116909.

It can be divided in two parts, 26896 and 1786, that added together give a palindrome (28682).

The spelling of 268961786 in words is "two hundred sixty-eight million, nine hundred sixty-one thousand, seven hundred eighty-six".