26131697 has 4 divisors (see below), whose sum is σ = 27032820. Its totient is φ = 25230576.

The previous prime is 26131687. The next prime is 26131723. The reversal of 26131697 is 79613162.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6806881 + 19324816 = 2609^2 + 4396^2 .

It is a cyclic number.

It is not a de Polignac number, because 26131697 - 2⁴ = 26131681 is a prime.

It is a super-3 number, since 3×26131697³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26131627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450518 + ... + 450575.

It is an arithmetic number, because the mean of its divisors is an integer number (6758205).

Almost surely, 2^26131697 is an apocalyptic number.

It is an amenable number.

26131697 is a deficient number, since it is larger than the sum of its proper divisors (901123).

26131697 is an equidigital number, since it uses as much as digits as its factorization.

26131697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901122.

The product of its digits is 13608, while the sum is 35.

The square root of 26131697 is about 5111.9171550408. The cubic root of 26131697 is about 296.7489593418.

The spelling of 26131697 in words is "twenty-six million, one hundred thirty-one thousand, six hundred ninety-seven".