11623986 has 60 divisors (see below), whose sum is σ = 28677726. Its totient is φ = 3516480.

The previous prime is 11623979. The next prime is 11623987. The reversal of 11623986 is 68932611.

11623986 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 can be written as a sum of positive squares in only one way, i.e., 9418761 + 2205225 = 3069^2 + 1485^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11623986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11623987) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 19306 + ... + 19898.

Almost surely, 2^11623986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11623986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14338863).

11623986 is an abundant number, since it is smaller than the sum of its proper divisors (17053740).

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

11623986 is a wasteful number, since it uses less digits than its factorization.

11623986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629 (or 609 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 11623986 is about 3409.3967208291. The cubic root of 11623986 is about 226.5261581122.

The spelling of 11623986 in words is "eleven million, six hundred twenty-three thousand, nine hundred eighty-six".