11566740 has 48 divisors (see below), whose sum is σ = 32554368. Its totient is φ = 3068544.

The previous prime is 11566733. The next prime is 11566741. The reversal of 11566740 is 4766511.

11566740 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 Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 11566698 and 11566707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11566741) 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, 15414 + ... + 16146.

It is an arithmetic number, because the mean of its divisors is an integer number (678216).

Almost surely, 2^11566740 is an apocalyptic number.

11566740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11566740 is an abundant number, since it is smaller than the sum of its proper divisors (20987628).

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

11566740 is a wasteful number, since it uses less digits than its factorization.

11566740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008 (or 1006 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 11566740 is about 3400.9910320376. The cubic root of 11566740 is about 226.1536793785.

The spelling of 11566740 in words is "eleven million, five hundred sixty-six thousand, seven hundred forty".