1143663 has 4 divisors (see below), whose sum is σ = 1524888. Its totient is φ = 762440.

The previous prime is 1143661. The next prime is 1143679. The reversal of 1143663 is 3663411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1143663 - 2¹ = 1143661 is a prime.

It is a D-number.

1143663 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143661) 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 3 ways as a sum of consecutive naturals, for example, 190608 + ... + 190613.

It is an arithmetic number, because the mean of its divisors is an integer number (381222).

2^1143663 is an apocalyptic number.

1143663 is a deficient number, since it is larger than the sum of its proper divisors (381225).

1143663 is an equidigital number, since it uses as much as digits as its factorization.

1143663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381224.

The product of its digits is 1296, while the sum is 24.

The square root of 1143663 is about 1069.4218063982. The cubic root of 1143663 is about 104.5761599217.

The spelling of 1143663 in words is "one million, one hundred forty-three thousand, six hundred sixty-three".