11663943 has 8 divisors (see below), whose sum is σ = 15883008. Its totient is φ = 7610424.

The previous prime is 11663933. The next prime is 11663957. The reversal of 11663943 is 34936611.

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

It is not a de Polignac number, because 11663943 - 2¹⁰ = 11662919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11663923) 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, 41221 + ... + 41502.

It is an arithmetic number, because the mean of its divisors is an integer number (1985376).

Almost surely, 2^11663943 is an apocalyptic number.

11663943 is a deficient number, since it is larger than the sum of its proper divisors (4219065).

11663943 is an equidigital number, since it uses as much as digits as its factorization.

11663943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82773.

The product of its digits is 11664, while the sum is 33.

The square root of 11663943 is about 3415.2515280723. The cubic root of 11663943 is about 226.7854195592.

The spelling of 11663943 in words is "eleven million, six hundred sixty-three thousand, nine hundred forty-three".