4381663 has 12 divisors (see below), whose sum is σ = 5178168. Its totient is φ = 3675360.

The previous prime is 4381607. The next prime is 4381667. The reversal of 4381663 is 3661834.

It is not a de Polignac number, because 4381663 - 2⁹ = 4381151 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4381667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 681 + ... + 3037.

It is an arithmetic number, because the mean of its divisors is an integer number (431514).

Almost surely, 2^4381663 is an apocalyptic number.

4381663 is a deficient number, since it is larger than the sum of its proper divisors (796505).

4381663 is a wasteful number, since it uses less digits than its factorization.

4381663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394 (or 2381 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 4381663 is about 2093.2422220087. The cubic root of 4381663 is about 163.6363024036.

The spelling of 4381663 in words is "four million, three hundred eighty-one thousand, six hundred sixty-three".