11665340 has 12 divisors (see below), whose sum is σ = 24497256. Its totient is φ = 4666128.

The previous prime is 11665333. The next prime is 11665363. The reversal of 11665340 is 4356611.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291614 + ... + 291653.

It is an arithmetic number, because the mean of its divisors is an integer number (2041438).

Almost surely, 2^11665340 is an apocalyptic number.

11665340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11665340 is an abundant number, since it is smaller than the sum of its proper divisors (12831916).

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

11665340 is a wasteful number, since it uses less digits than its factorization.

11665340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583276 (or 583274 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 11665340 is about 3415.4560456841. The cubic root of 11665340 is about 226.7944732895.

It can be divided in two parts, 116 and 65340, that added together give a palindrome (65456).

The spelling of 11665340 in words is "eleven million, six hundred sixty-five thousand, three hundred forty".