11632661 has 4 divisors (see below), whose sum is σ = 11903232. Its totient is φ = 11362092.

The previous prime is 11632637. The next prime is 11632679. The reversal of 11632661 is 16623611.

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.

It is a cyclic number.

It is not a de Polignac number, because 11632661 - 2⁶ = 11632597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11632661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11632631) 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, 135221 + ... + 135306.

It is an arithmetic number, because the mean of its divisors is an integer number (2975808).

Almost surely, 2^11632661 is an apocalyptic number.

It is an amenable number.

11632661 is a deficient number, since it is larger than the sum of its proper divisors (270571).

11632661 is an equidigital number, since it uses as much as digits as its factorization.

11632661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270570.

The product of its digits is 1296, while the sum is 26.

The square root of 11632661 is about 3410.6687027620. The cubic root of 11632661 is about 226.5824963817.

The spelling of 11632661 in words is "eleven million, six hundred thirty-two thousand, six hundred sixty-one".