26612563 has 2 divisors, whose sum is σ = 26612564. Its totient is φ = 26612562.

The previous prime is 26612549. The next prime is 26612569. The reversal of 26612563 is 36521662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26612563 - 2¹⁷ = 26481491 is a prime.

It is not a weakly prime, because it can be changed into another prime (26612569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13306281 + 13306282.

It is an arithmetic number, because the mean of its divisors is an integer number (13306282).

Almost surely, 2^26612563 is an apocalyptic number.

26612563 is a deficient number, since it is larger than the sum of its proper divisors (1).

26612563 is an equidigital number, since it uses as much as digits as its factorization.

26612563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 31.

The square root of 26612563 is about 5158.7365701303. The cubic root of 26612563 is about 298.5581292799.

Subtracting 26612563 from its reverse (36521662), we obtain a palindrome (9909099).

The spelling of 26612563 in words is "twenty-six million, six hundred twelve thousand, five hundred sixty-three".