11765665 has 8 divisors (see below), whose sum is σ = 14289408. Its totient is φ = 9298800.

The previous prime is 11765659. The next prime is 11765759. The reversal of 11765665 is 56656711.

11765665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-11765665 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13761 + ... + 14590.

It is an arithmetic number, because the mean of its divisors is an integer number (1786176).

Almost surely, 2^11765665 is an apocalyptic number.

It is an amenable number.

11765665 is a deficient number, since it is larger than the sum of its proper divisors (2523743).

11765665 is an equidigital number, since it uses as much as digits as its factorization.

11765665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28439.

The product of its digits is 37800, while the sum is 37.

The square root of 11765665 is about 3430.1115142222. Note that the first 3 decimals coincide. The cubic root of 11765665 is about 227.4427823743.

The spelling of 11765665 in words is "eleven million, seven hundred sixty-five thousand, six hundred sixty-five".