26630563 has 2 divisors, whose sum is σ = 26630564. Its totient is φ = 26630562.

The previous prime is 26630561. The next prime is 26630567. The reversal of 26630563 is 36503662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26630563 - 2¹ = 26630561 is a prime.

Together with 26630561, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26630561) 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, 13315281 + 13315282.

It is an arithmetic number, because the mean of its divisors is an integer number (13315282).

Almost surely, 2^26630563 is an apocalyptic number.

26630563 is a deficient number, since it is larger than the sum of its proper divisors (1).

26630563 is an equidigital number, since it uses as much as digits as its factorization.

26630563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 26630563 is about 5160.4808884444. The cubic root of 26630563 is about 298.6254262575.

The spelling of 26630563 in words is "twenty-six million, six hundred thirty thousand, five hundred sixty-three".