11916663 has 8 divisors (see below), whose sum is σ = 17333376. Its totient is φ = 7222200.

The previous prime is 11916661. The next prime is 11916689. The reversal of 11916663 is 36661911.

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

It is not a de Polignac number, because 11916663 - 2¹ = 11916661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 361111 = 11916663 / (1 + 1 + 9 + 1 + 6 + 6 + 6 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11916661) 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, 180523 + ... + 180588.

It is an arithmetic number, because the mean of its divisors is an integer number (2166672).

Almost surely, 2^11916663 is an apocalyptic number.

11916663 is a deficient number, since it is larger than the sum of its proper divisors (5416713).

11916663 is a wasteful number, since it uses less digits than its factorization.

11916663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361125.

The product of its digits is 5832, while the sum is 33.

The square root of 11916663 is about 3452.0519984496. The cubic root of 11916663 is about 228.4116332715.

The spelling of 11916663 in words is "eleven million, nine hundred sixteen thousand, six hundred sixty-three".