26860591 has 2 divisors, whose sum is σ = 26860592. Its totient is φ = 26860590.

The previous prime is 26860579. The next prime is 26860609. The reversal of 26860591 is 19506862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26860591 - 2²¹ = 24763439 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26860591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26860541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13430295 + 13430296.

It is an arithmetic number, because the mean of its divisors is an integer number (13430296).

Almost surely, 2^26860591 is an apocalyptic number.

26860591 is a deficient number, since it is larger than the sum of its proper divisors (1).

26860591 is an equidigital number, since it uses as much as digits as its factorization.

26860591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 26860591 is about 5182.7204246419. The cubic root of 26860591 is about 299.4827791582.

The spelling of 26860591 in words is "twenty-six million, eight hundred sixty thousand, five hundred ninety-one".