11640660 has 48 divisors (see below), whose sum is σ = 32864832. Its totient is φ = 3078400.

The previous prime is 11640649. The next prime is 11640677. The reversal of 11640660 is 6604611.

It is a self number, because there is not a number n which added to its sum of digits gives 11640660.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7120 + ... + 8600.

It is an arithmetic number, because the mean of its divisors is an integer number (684684).

Almost surely, 2^11640660 is an apocalyptic number.

11640660 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 11640660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16432416).

11640660 is an abundant number, since it is smaller than the sum of its proper divisors (21224172).

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

11640660 is a wasteful number, since it uses less digits than its factorization.

11640660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624 (or 1622 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 11640660 is about 3411.8411451883. The cubic root of 11640660 is about 226.6344196725.

The spelling of 11640660 in words is "eleven million, six hundred forty thousand, six hundred sixty".