11983665 has 8 divisors (see below), whose sum is σ = 19173888. Its totient is φ = 6391280.

The previous prime is 11983663. The next prime is 11983669. The reversal of 11983665 is 56638911.

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

It is not a de Polignac number, because 11983665 - 2¹ = 11983663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11983663) 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, 399441 + ... + 399470.

It is an arithmetic number, because the mean of its divisors is an integer number (2396736).

Almost surely, 2^11983665 is an apocalyptic number.

11983665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11983665 is a deficient number, since it is larger than the sum of its proper divisors (7190223).

11983665 is an equidigital number, since it uses as much as digits as its factorization.

11983665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798919.

The product of its digits is 38880, while the sum is 39.

The square root of 11983665 is about 3461.7430580562. The cubic root of 11983665 is about 228.8389185206.

The spelling of 11983665 in words is "eleven million, nine hundred eighty-three thousand, six hundred sixty-five".