20110663 has 4 divisors (see below), whose sum is σ = 20440408. Its totient is φ = 19780920.

The previous prime is 20110631. The next prime is 20110687. The reversal of 20110663 is 36601102.

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 20110663 - 2⁵ = 20110631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20110663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110603) 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, 164781 + ... + 164902.

It is an arithmetic number, because the mean of its divisors is an integer number (5110102).

Almost surely, 2^20110663 is an apocalyptic number.

20110663 is a deficient number, since it is larger than the sum of its proper divisors (329745).

20110663 is an equidigital number, since it uses as much as digits as its factorization.

20110663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329744.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 20110663 is about 4484.4913869914. The cubic root of 20110663 is about 271.9414837717.

Adding to 20110663 its reverse (36601102), we get a palindrome (56711765).

The spelling of 20110663 in words is "twenty million, one hundred ten thousand, six hundred sixty-three".