2143663 has 4 divisors (see below), whose sum is σ = 2158200. Its totient is φ = 2129128.

The previous prime is 2143627. The next prime is 2143667. The reversal of 2143663 is 3663412.

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 2143663 - 2²¹ = 46511 is a prime.

It is a d-powerful number, because it can be written as 2 + 1 + 4⁷ + 3¹² + 6³ + 6⁴ + 3¹³ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7045 + ... + 7342.

It is an arithmetic number, because the mean of its divisors is an integer number (539550).

2^2143663 is an apocalyptic number.

2143663 is a deficient number, since it is larger than the sum of its proper divisors (14537).

2143663 is a wasteful number, since it uses less digits than its factorization.

2143663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14536.

The product of its digits is 2592, while the sum is 25.

The square root of 2143663 is about 1464.1253361649. The cubic root of 2143663 is about 128.9393581527.

It can be divided in two parts, 214366 and 3, that added together give a square (214369 = 463²).

The spelling of 2143663 in words is "two million, one hundred forty-three thousand, six hundred sixty-three".