20022663 has 8 divisors (see below), whose sum is σ = 26737776. Its totient is φ = 13328000.

The previous prime is 20022631. The next prime is 20022677. The reversal of 20022663 is 36622002.

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 20022663 - 2⁵ = 20022631 is a prime.

It is a super-2 number, since 2×20022663² = 801814067223138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2658 + ... + 6863.

It is an arithmetic number, because the mean of its divisors is an integer number (3342222).

Almost surely, 2^20022663 is an apocalyptic number.

20022663 is a deficient number, since it is larger than the sum of its proper divisors (6715113).

20022663 is an equidigital number, since it uses as much as digits as its factorization.

20022663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10225.

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

The square root of 20022663 is about 4474.6690380407. The cubic root of 20022663 is about 271.5442510347.

Adding to 20022663 its reverse (36622002), we get a palindrome (56644665).

The spelling of 20022663 in words is "twenty million, twenty-two thousand, six hundred sixty-three".