26670859 has 2 divisors, whose sum is σ = 26670860. Its totient is φ = 26670858.

The previous prime is 26670817. The next prime is 26670871. The reversal of 26670859 is 95807662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26670859 - 2¹³ = 26662667 is a prime.

It is a super-2 number, since 2×26670859² = 1422669439595762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26670899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13335429 + 13335430.

It is an arithmetic number, because the mean of its divisors is an integer number (13335430).

Almost surely, 2^26670859 is an apocalyptic number.

26670859 is a deficient number, since it is larger than the sum of its proper divisors (1).

26670859 is an equidigital number, since it uses as much as digits as its factorization.

26670859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 26670859 is about 5164.3836999201. The cubic root of 26670859 is about 298.7759719022.

The spelling of 26670859 in words is "twenty-six million, six hundred seventy thousand, eight hundred fifty-nine".