11661606 has 24 divisors (see below), whose sum is σ = 27564264. Its totient is φ = 3533760.

The previous prime is 11661571. The next prime is 11661607. The reversal of 11661606 is 60616611.

11661606 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 11661606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11661607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29251 + ... + 29646.

It is an arithmetic number, because the mean of its divisors is an integer number (1148511).

Almost surely, 2^11661606 is an apocalyptic number.

11661606 is an abundant number, since it is smaller than the sum of its proper divisors (15902658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11661606 is a wasteful number, since it uses less digits than its factorization.

11661606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58916 (or 58913 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 11661606 is about 3414.9093692220. The cubic root of 11661606 is about 226.7702722250.

It can be divided in two parts, 1166 and 1606, that added together give a palindrome (2772).

The spelling of 11661606 in words is "eleven million, six hundred sixty-one thousand, six hundred six".