11636620 has 48 divisors (see below), whose sum is σ = 26163648. Its totient is φ = 4336640.

The previous prime is 11636609. The next prime is 11636623. The reversal of 11636620 is 2663611.

11636620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11636623) 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, 18552 + ... + 19168.

It is an arithmetic number, because the mean of its divisors is an integer number (545076).

Almost surely, 2^11636620 is an apocalyptic number.

11636620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11636620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13081824).

11636620 is an abundant number, since it is smaller than the sum of its proper divisors (14527028).

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

11636620 is a wasteful number, since it uses less digits than its factorization.

11636620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 11636620 is about 3411.2490381091. The cubic root of 11636620 is about 226.6081981066.

The spelling of 11636620 in words is "eleven million, six hundred thirty-six thousand, six hundred twenty".