8661266 has 4 divisors (see below), whose sum is σ = 12991902. Its totient is φ = 4330632.

The previous prime is 8661253. The next prime is 8661281. The reversal of 8661266 is 6621668.

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., 8265625 + 395641 = 2875^2 + 629^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2165315 + ... + 2165318.

Almost surely, 2^8661266 is an apocalyptic number.

8661266 is a deficient number, since it is larger than the sum of its proper divisors (4330636).

8661266 is a wasteful number, since it uses less digits than its factorization.

8661266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4330635.

The product of its digits is 20736, while the sum is 35.

The square root of 8661266 is about 2943.0028882079. The cubic root of 8661266 is about 205.3653291298.

The spelling of 8661266 in words is "eight million, six hundred sixty-one thousand, two hundred sixty-six".