11136623 has 4 divisors (see below), whose sum is σ = 11620848. Its totient is φ = 10652400.

The previous prime is 11136617. The next prime is 11136647. The reversal of 11136623 is 32663111.

It is a happy number.

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 11136623 - 2¹⁰ = 11135599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 484201 = 11136623 / (1 + 1 + 1 + 3 + 6 + 6 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11136023) 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, 242078 + ... + 242123.

It is an arithmetic number, because the mean of its divisors is an integer number (2905212).

Almost surely, 2^11136623 is an apocalyptic number.

11136623 is a deficient number, since it is larger than the sum of its proper divisors (484225).

11136623 is an equidigital number, since it uses as much as digits as its factorization.

11136623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484224.

The product of its digits is 648, while the sum is 23.

The square root of 11136623 is about 3337.1579225443. The cubic root of 11136623 is about 223.3149711395.

Adding to 11136623 its reverse (32663111), we get a palindrome (43799734).

The spelling of 11136623 in words is "eleven million, one hundred thirty-six thousand, six hundred twenty-three".