2220663 has 8 divisors (see below), whose sum is σ = 3116800. Its totient is φ = 1402488.

The previous prime is 2220661. The next prime is 2220671. The reversal of 2220663 is 3660222.

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

It is not a de Polignac number, because 2220663 - 2¹ = 2220661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220661) 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, 19423 + ... + 19536.

It is an arithmetic number, because the mean of its divisors is an integer number (389600).

2^2220663 is an apocalyptic number.

2220663 is a deficient number, since it is larger than the sum of its proper divisors (896137).

2220663 is a wasteful number, since it uses less digits than its factorization.

2220663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38981.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 2220663 is about 1490.1889141985. The cubic root of 2220663 is about 130.4650601548.

Adding to 2220663 its reverse (3660222), we get a palindrome (5880885).

The spelling of 2220663 in words is "two million, two hundred twenty thousand, six hundred sixty-three".