4215663 has 24 divisors (see below), whose sum is σ = 6505200. Its totient is φ = 2623104.

The previous prime is 4215641. The next prime is 4215683. The reversal of 4215663 is 3665124.

It is not a de Polignac number, because 4215663 - 2⁶ = 4215599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4215613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15081 + ... + 15357.

It is an arithmetic number, because the mean of its divisors is an integer number (271050).

Almost surely, 2^4215663 is an apocalyptic number.

4215663 is a deficient number, since it is larger than the sum of its proper divisors (2289537).

4215663 is a wasteful number, since it uses less digits than its factorization.

4215663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391 (or 388 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 4215663 is about 2053.2079777753. The cubic root of 4215663 is about 161.5431803436.

It can be divided in two parts, 421 and 5663, that added together give a square (6084 = 78²).

The spelling of 4215663 in words is "four million, two hundred fifteen thousand, six hundred sixty-three".