26297965 has 4 divisors (see below), whose sum is σ = 31557564. Its totient is φ = 21038368.

The previous prime is 26297959. The next prime is 26297977. The reversal of 26297965 is 56979262.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56979262 = 2 ⋅28489631.

It can be written as a sum of positive squares in 2 ways, for example, as 19527561 + 6770404 = 4419^2 + 2602^2 .

It is a cyclic number.

It is not a de Polignac number, because 26297965 - 2¹³ = 26289773 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 3 ways as a sum of consecutive naturals, for example, 2629792 + ... + 2629801.

It is an arithmetic number, because the mean of its divisors is an integer number (7889391).

Almost surely, 2^26297965 is an apocalyptic number.

It is an amenable number.

26297965 is a deficient number, since it is larger than the sum of its proper divisors (5259599).

26297965 is an equidigital number, since it uses as much as digits as its factorization.

26297965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5259598.

The product of its digits is 408240, while the sum is 46.

The square root of 26297965 is about 5128.1541513492. The cubic root of 26297965 is about 297.3770035073.

The spelling of 26297965 in words is "twenty-six million, two hundred ninety-seven thousand, nine hundred sixty-five".