26556985 has 16 divisors (see below), whose sum is σ = 39223296. Its totient is φ = 16809408.

The previous prime is 26556983. The next prime is 26556989. The reversal of 26556985 is 58965562.

It is not a de Polignac number, because 26556985 - 2¹ = 26556983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26556983) 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 in 15 ways as a sum of consecutive naturals, for example, 28729 + ... + 29638.

It is an arithmetic number, because the mean of its divisors is an integer number (2451456).

Almost surely, 2^26556985 is an apocalyptic number.

It is an amenable number.

26556985 is a deficient number, since it is larger than the sum of its proper divisors (12666311).

26556985 is a wasteful number, since it uses less digits than its factorization.

26556985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58392.

The product of its digits is 648000, while the sum is 46.

The square root of 26556985 is about 5153.3469706590. The cubic root of 26556985 is about 298.3501469532.

The spelling of 26556985 in words is "twenty-six million, five hundred fifty-six thousand, nine hundred eighty-five".