26621065 has 16 divisors (see below), whose sum is σ = 34152192. Its totient is φ = 19849984.

The previous prime is 26621053. The next prime is 26621081. The reversal of 26621065 is 56012662.

It is a cyclic number.

It is not a de Polignac number, because 26621065 - 2¹¹ = 26619017 is a prime.

It is a super-2 number, since 2×26621065² = 1417362203468450, which contains 22 as substring.

It is a Duffinian number.

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, 7632 + ... + 10558.

It is an arithmetic number, because the mean of its divisors is an integer number (2134512).

Almost surely, 2^26621065 is an apocalyptic number.

It is an amenable number.

26621065 is a deficient number, since it is larger than the sum of its proper divisors (7531127).

26621065 is a wasteful number, since it uses less digits than its factorization.

26621065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 26621065 is about 5159.5605433021. The cubic root of 26621065 is about 298.5899196660.

The spelling of 26621065 in words is "twenty-six million, six hundred twenty-one thousand, sixty-five".