20272663 has 2 divisors, whose sum is σ = 20272664. Its totient is φ = 20272662.

The previous prime is 20272661. The next prime is 20272699. The reversal of 20272663 is 36627202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20272663 - 2¹ = 20272661 is a prime.

It is a super-2 number, since 2×20272663² = 821961730223138, which contains 22 as substring.

Together with 20272661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20272661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10136331 + 10136332.

It is an arithmetic number, because the mean of its divisors is an integer number (10136332).

Almost surely, 2^20272663 is an apocalyptic number.

20272663 is a deficient number, since it is larger than the sum of its proper divisors (1).

20272663 is an equidigital number, since it uses as much as digits as its factorization.

20272663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 20272663 is about 4502.5174069625. The cubic root of 20272663 is about 272.6697334944.

Adding to 20272663 its reverse (36627202), we get a palindrome (56899865).

The spelling of 20272663 in words is "twenty million, two hundred seventy-two thousand, six hundred sixty-three".