26397655 has 4 divisors (see below), whose sum is σ = 31677192. Its totient is φ = 21118120.

The previous prime is 26397653. The next prime is 26397659. The reversal of 26397655 is 55679362.

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

It is not a de Polignac number, because 26397655 - 2¹ = 26397653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26397653) 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, 2639761 + ... + 2639770.

It is an arithmetic number, because the mean of its divisors is an integer number (7919298).

Almost surely, 2^26397655 is an apocalyptic number.

26397655 is a deficient number, since it is larger than the sum of its proper divisors (5279537).

26397655 is an equidigital number, since it uses as much as digits as its factorization.

26397655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5279536.

The product of its digits is 340200, while the sum is 43.

The square root of 26397655 is about 5137.8648288954. The cubic root of 26397655 is about 297.7522940443.

The spelling of 26397655 in words is "twenty-six million, three hundred ninety-seven thousand, six hundred fifty-five".