2193663 has 8 divisors (see below), whose sum is σ = 3097008. Its totient is φ = 1376384.

The previous prime is 2193661. The next prime is 2193673. The reversal of 2193663 is 3663912.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2193663 - 2¹ = 2193661 is a prime.

It is an Ulam number.

2193663 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2193663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2193661) 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, 21456 + ... + 21557.

It is an arithmetic number, because the mean of its divisors is an integer number (387126).

2^2193663 is an apocalyptic number.

2193663 is a deficient number, since it is larger than the sum of its proper divisors (903345).

2193663 is a wasteful number, since it uses less digits than its factorization.

2193663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43033.

The product of its digits is 5832, while the sum is 30.

The square root of 2193663 is about 1481.1019546270. The cubic root of 2193663 is about 129.9341481077.

The spelling of 2193663 in words is "two million, one hundred ninety-three thousand, six hundred sixty-three".