11266661 has 4 divisors (see below), whose sum is σ = 12876192. Its totient is φ = 9657132.

The previous prime is 11266643. The next prime is 11266663. The reversal of 11266661 is 16666211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16666211 = 19 ⋅877169.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11266661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11266663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 804755 + ... + 804768.

It is an arithmetic number, because the mean of its divisors is an integer number (3219048).

Almost surely, 2^11266661 is an apocalyptic number.

It is an amenable number.

11266661 is a deficient number, since it is larger than the sum of its proper divisors (1609531).

11266661 is an equidigital number, since it uses as much as digits as its factorization.

11266661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609530.

The product of its digits is 2592, while the sum is 29.

The square root of 11266661 is about 3356.5847226012. The cubic root of 11266661 is about 224.1807971143.

The spelling of 11266661 in words is "eleven million, two hundred sixty-six thousand, six hundred sixty-one".