26604965 has 8 divisors (see below), whose sum is σ = 31957368. Its totient is φ = 21263040.

The previous prime is 26604953. The next prime is 26604973. The reversal of 26604965 is 56940662.

It is a Cunningham number, because it is equal to 5158²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 9572836 + 17032129 = 3094^2 + 4127^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26604965 - 2⁸ = 26604709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4979 + ... + 8831.

It is an arithmetic number, because the mean of its divisors is an integer number (3994671).

Almost surely, 2^26604965 is an apocalyptic number.

It is an amenable number.

26604965 is a deficient number, since it is larger than the sum of its proper divisors (5352403).

26604965 is a wasteful number, since it uses less digits than its factorization.

26604965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5239.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 26604965 is about 5158.0000969368. Note that the first 4 decimals coincide. The cubic root of 26604965 is about 298.5297133699.

The spelling of 26604965 in words is "twenty-six million, six hundred four thousand, nine hundred sixty-five".