11691633 has 16 divisors (see below), whose sum is σ = 15906176. Its totient is φ = 7637760.

The previous prime is 11691587. The next prime is 11691643. The reversal of 11691633 is 33619611.

11691633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11691633 - 2⁸ = 11691377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11691633.

It is not an unprimeable number, because it can be changed into a prime (11691643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48393 + ... + 48633.

It is an arithmetic number, because the mean of its divisors is an integer number (994136).

Almost surely, 2^11691633 is an apocalyptic number.

It is an amenable number.

11691633 is a deficient number, since it is larger than the sum of its proper divisors (4214543).

11691633 is a wasteful number, since it uses less digits than its factorization.

11691633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504.

The product of its digits is 2916, while the sum is 30.

The square root of 11691633 is about 3419.3029991506. The cubic root of 11691633 is about 226.9647392947.

The spelling of 11691633 in words is "eleven million, six hundred ninety-one thousand, six hundred thirty-three".