11623665 has 32 divisors (see below), whose sum is σ = 19975680. Its totient is φ = 5750784.

The previous prime is 11623657. The next prime is 11623669. The reversal of 11623665 is 56632611.

11623665 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11623665 - 2³ = 11623657 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11623669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19857 + ... + 20433.

It is an arithmetic number, because the mean of its divisors is an integer number (624240).

Almost surely, 2^11623665 is an apocalyptic number.

11623665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11623665 is a deficient number, since it is larger than the sum of its proper divisors (8352015).

11623665 is a wasteful number, since it uses less digits than its factorization.

11623665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681.

The product of its digits is 6480, while the sum is 30.

The square root of 11623665 is about 3409.3496447270. The cubic root of 11623665 is about 226.5240728962.

The spelling of 11623665 in words is "eleven million, six hundred twenty-three thousand, six hundred sixty-five".