872266 has 8 divisors (see below), whose sum is σ = 1316484. Its totient is φ = 433440.

The previous prime is 872257. The next prime is 872269. The reversal of 872266 is 662278.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 855625 + 16641 = 925^2 + 129^2 .

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

It is not an unprimeable number, because it can be changed into a prime (872269) by changing a digit.

872266 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 in 3 ways as a sum of consecutive naturals, for example, 915 + ... + 1606.

2⁸⁷²²⁶⁶ is an apocalyptic number.

872266 is a deficient number, since it is larger than the sum of its proper divisors (444218).

872266 is a wasteful number, since it uses less digits than its factorization.

872266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2696.

The product of its digits is 8064, while the sum is 31.

The square root of 872266 is about 933.9518188857. The cubic root of 872266 is about 95.5468370348.

The spelling of 872266 in words is "eight hundred seventy-two thousand, two hundred sixty-six".