8271990266 has 4 divisors (see below), whose sum is σ = 12407985402. Its totient is φ = 4135995132.

The previous prime is 8271990257. The next prime is 8271990277. The reversal of 8271990266 is 6620991728.

It is a happy number.

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., 7137715225 + 1134275041 = 84485^2 + 33679^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2067997565 + ... + 2067997568.

Almost surely, 2^8271990266 is an apocalyptic number.

8271990266 is a deficient number, since it is larger than the sum of its proper divisors (4135995136).

8271990266 is a wasteful number, since it uses less digits than its factorization.

8271990266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4135995135.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 8271990266 is about 90950.4824945970. The cubic root of 8271990266 is about 2022.4137295225.

The spelling of 8271990266 in words is "eight billion, two hundred seventy-one million, nine hundred ninety thousand, two hundred sixty-six".