20233663 has 2 divisors, whose sum is σ = 20233664. Its totient is φ = 20233662.

The previous prime is 20233649. The next prime is 20233687. The reversal of 20233663 is 36633202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20233663 - 2¹⁷ = 20102591 is a prime.

It is a super-2 number, since 2×20233663² = 818802236795138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20233643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10116831 + 10116832.

It is an arithmetic number, because the mean of its divisors is an integer number (10116832).

Almost surely, 2^20233663 is an apocalyptic number.

20233663 is a deficient number, since it is larger than the sum of its proper divisors (1).

20233663 is an equidigital number, since it uses as much as digits as its factorization.

20233663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 25.

The square root of 20233663 is about 4498.1844115154. The cubic root of 20233663 is about 272.4947697001.

Adding to 20233663 its reverse (36633202), we get a palindrome (56866865).

The spelling of 20233663 in words is "twenty million, two hundred thirty-three thousand, six hundred sixty-three".