16663244 has 24 divisors (see below), whose sum is σ = 32419968. Its totient is φ = 7441920.

The previous prime is 16663243. The next prime is 16663259. The reversal of 16663244 is 44236661.

It is a super-3 number, since 3×16663244³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16663244.

It is not an unprimeable number, because it can be changed into a prime (16663243) 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 7 ways as a sum of consecutive naturals, for example, 3557 + ... + 6780.

It is an arithmetic number, because the mean of its divisors is an integer number (1350832).

Almost surely, 2^16663244 is an apocalyptic number.

It is an amenable number.

16663244 is a deficient number, since it is larger than the sum of its proper divisors (15756724).

16663244 is a wasteful number, since it uses less digits than its factorization.

16663244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10385 (or 10383 counting only the distinct ones).

The product of its digits is 20736, while the sum is 32.

The square root of 16663244 is about 4082.0636937706. The cubic root of 16663244 is about 255.4189907891.

The spelling of 16663244 in words is "sixteen million, six hundred sixty-three thousand, two hundred forty-four".