26581065 has 16 divisors (see below), whose sum is σ = 48605568. Its totient is φ = 12151296.

The previous prime is 26581039. The next prime is 26581097. The reversal of 26581065 is 56018562.

It is not a de Polignac number, because 26581065 - 2⁶ = 26581001 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126472 + ... + 126681.

It is an arithmetic number, because the mean of its divisors is an integer number (3037848).

Almost surely, 2^26581065 is an apocalyptic number.

It is an amenable number.

26581065 is a deficient number, since it is larger than the sum of its proper divisors (22024503).

26581065 is a wasteful number, since it uses less digits than its factorization.

26581065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253168.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 26581065 is about 5155.6827869837. The cubic root of 26581065 is about 298.4402939990.

The spelling of 26581065 in words is "twenty-six million, five hundred eighty-one thousand, sixty-five".