20263567 has 2 divisors, whose sum is σ = 20263568. Its totient is φ = 20263566.

The previous prime is 20263561. The next prime is 20263589. The reversal of 20263567 is 76536202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20263567 - 2¹¹ = 20261519 is a prime.

It is a super-2 number, since 2×20263567² = 821224295126978, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20263561) 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, 10131783 + 10131784.

It is an arithmetic number, because the mean of its divisors is an integer number (10131784).

Almost surely, 2^20263567 is an apocalyptic number.

20263567 is a deficient number, since it is larger than the sum of its proper divisors (1).

20263567 is an equidigital number, since it uses as much as digits as its factorization.

20263567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 20263567 is about 4501.5071920414. The cubic root of 20263567 is about 272.6289466323.

Adding to 20263567 its reverse (76536202), we get a palindrome (96799769).

The spelling of 20263567 in words is "twenty million, two hundred sixty-three thousand, five hundred sixty-seven".