11665043 has 8 divisors (see below), whose sum is σ = 13301568. Its totient is φ = 10134144.

The previous prime is 11665039. The next prime is 11665057. The reversal of 11665043 is 34056611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11665043 - 2² = 11665039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11665013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26171 + ... + 26612.

It is an arithmetic number, because the mean of its divisors is an integer number (1662696).

Almost surely, 2^11665043 is an apocalyptic number.

11665043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11665043 is a deficient number, since it is larger than the sum of its proper divisors (1636525).

11665043 is a wasteful number, since it uses less digits than its factorization.

11665043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52813.

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

The square root of 11665043 is about 3415.4125665869. The cubic root of 11665043 is about 226.7925485412.

The spelling of 11665043 in words is "eleven million, six hundred sixty-five thousand, forty-three".