11287666 has 8 divisors (see below), whose sum is σ = 18233964. Its totient is φ = 5209680.

The previous prime is 11287663. The next prime is 11287693. The reversal of 11287666 is 66678211.

11287666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8242641 + 3045025 = 2871^2 + 1745^2 .

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

It is a super-2 number, since 2×11287666² = 254822807455112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11287663) 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, 217045 + ... + 217096.

Almost surely, 2^11287666 is an apocalyptic number.

11287666 is a deficient number, since it is larger than the sum of its proper divisors (6946298).

11287666 is a wasteful number, since it uses less digits than its factorization.

11287666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434156.

The product of its digits is 24192, while the sum is 37.

The square root of 11287666 is about 3359.7121900544. The cubic root of 11287666 is about 224.3200277853.

It can be divided in two parts, 112 and 87666, that added together give a palindrome (87778).

The spelling of 11287666 in words is "eleven million, two hundred eighty-seven thousand, six hundred sixty-six".