11601660 has 96 divisors (see below), whose sum is σ = 38771712. Its totient is φ = 2534400.

The previous prime is 11601659. The next prime is 11601673. The reversal of 11601660 is 6610611.

11601660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9060 + ... + 10260.

It is an arithmetic number, because the mean of its divisors is an integer number (403872).

Almost surely, 2^11601660 is an apocalyptic number.

11601660 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 11601660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19385856).

11601660 is an abundant number, since it is smaller than the sum of its proper divisors (27170052).

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

11601660 is a wasteful number, since it uses less digits than its factorization.

11601660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243 (or 1241 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 11601660 is about 3406.1209608586. The cubic root of 11601660 is about 226.3810367982.

The spelling of 11601660 in words is "eleven million, six hundred one thousand, six hundred sixty".