11823665 has 16 divisors (see below), whose sum is σ = 16277760. Its totient is φ = 8076480.

The previous prime is 11823641. The next prime is 11823671. The reversal of 11823665 is 56632811.

It is a happy number.

It is not a de Polignac number, because 11823665 - 2⁶ = 11823601 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12095 + ... + 13035.

It is an arithmetic number, because the mean of its divisors is an integer number (1017360).

Almost surely, 2^11823665 is an apocalyptic number.

It is an amenable number.

11823665 is a deficient number, since it is larger than the sum of its proper divisors (4454095).

11823665 is an equidigital number, since it uses as much as digits as its factorization.

11823665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312.

The product of its digits is 8640, while the sum is 32.

The square root of 11823665 is about 3438.5556560859. Note that the first 3 decimals coincide. The cubic root of 11823665 is about 227.8159037685.

The spelling of 11823665 in words is "eleven million, eight hundred twenty-three thousand, six hundred sixty-five".