268866945 has 20 divisors (see below), whose sum is σ = 481969620. Its totient is φ = 143395488.

The previous prime is 268866919. The next prime is 268866973. The reversal of 268866945 is 549668862.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 58384881 + 210482064 = 7641^2 + 14508^2 .

It is not a de Polignac number, because 268866945 - 2⁷ = 268866817 is a prime.

It is a super-2 number, since 2×268866945² = 144578868227266050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 268866891 and 268866900.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 331530 + ... + 332339.

It is an arithmetic number, because the mean of its divisors is an integer number (24098481).

Almost surely, 2^268866945 is an apocalyptic number.

It is an amenable number.

268866945 is a deficient number, since it is larger than the sum of its proper divisors (213102675).

268866945 is an equidigital number, since it uses as much as digits as its factorization.

268866945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663886 (or 663877 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The square root of 268866945 is about 16397.1627118840. The cubic root of 268866945 is about 645.4250308380.

The spelling of 268866945 in words is "two hundred sixty-eight million, eight hundred sixty-six thousand, nine hundred forty-five".