7266563 has 4 divisors (see below), whose sum is σ = 7273848. Its totient is φ = 7259280.

The previous prime is 7266557. The next prime is 7266601. The reversal of 7266563 is 3656627.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3656627 = 13 ⋅281279.

It is a cyclic number.

It is not a de Polignac number, because 7266563 - 2¹² = 7262467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7266163) 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, 1853 + ... + 4238.

It is an arithmetic number, because the mean of its divisors is an integer number (1818462).

Almost surely, 2^7266563 is an apocalyptic number.

7266563 is a deficient number, since it is larger than the sum of its proper divisors (7285).

7266563 is a wasteful number, since it uses less digits than its factorization.

7266563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7284.

The product of its digits is 45360, while the sum is 35.

The square root of 7266563 is about 2695.6563208243. The cubic root of 7266563 is about 193.6911069010.

The spelling of 7266563 in words is "seven million, two hundred sixty-six thousand, five hundred sixty-three".