8720267 has 4 divisors (see below), whose sum is σ = 8754456. Its totient is φ = 8686080.

The previous prime is 8720233. The next prime is 8720281. The reversal of 8720267 is 7620278.

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

It is a cyclic number.

It is not a de Polignac number, because 8720267 - 2¹⁸ = 8458123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8720227) by changing a digit.

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, 16709 + ... + 17222.

It is an arithmetic number, because the mean of its divisors is an integer number (2188614).

Almost surely, 2^8720267 is an apocalyptic number.

8720267 is a deficient number, since it is larger than the sum of its proper divisors (34189).

8720267 is a wasteful number, since it uses less digits than its factorization.

8720267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34188.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 8720267 is about 2953.0098205052. The cubic root of 8720267 is about 205.8305940653.

The spelling of 8720267 in words is "eight million, seven hundred twenty thousand, two hundred sixty-seven".