26601791 has 2 divisors, whose sum is σ = 26601792. Its totient is φ = 26601790.

The previous prime is 26601709. The next prime is 26601793. The reversal of 26601791 is 19710662.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26601791 - 2¹⁴ = 26585407 is a prime.

It is a Sophie Germain prime.

Together with 26601793, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26601793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13300895 + 13300896.

It is an arithmetic number, because the mean of its divisors is an integer number (13300896).

Almost surely, 2^26601791 is an apocalyptic number.

26601791 is a deficient number, since it is larger than the sum of its proper divisors (1).

26601791 is an equidigital number, since it uses as much as digits as its factorization.

26601791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 26601791 is about 5157.6924103711. The cubic root of 26601791 is about 298.5178412627.

The spelling of 26601791 in words is "twenty-six million, six hundred one thousand, seven hundred ninety-one".