26220697 has 4 divisors (see below), whose sum is σ = 26394496. Its totient is φ = 26046900.

The previous prime is 26220683. The next prime is 26220707. The reversal of 26220697 is 79602262.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26220697 - 2⁷ = 26220569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26220617) 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, 86673 + ... + 86974.

It is an arithmetic number, because the mean of its divisors is an integer number (6598624).

Almost surely, 2^26220697 is an apocalyptic number.

It is an amenable number.

26220697 is a deficient number, since it is larger than the sum of its proper divisors (173799).

26220697 is a wasteful number, since it uses less digits than its factorization.

26220697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173798.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 26220697 is about 5120.6149044817. The cubic root of 26220697 is about 297.0854693233.

The spelling of 26220697 in words is "twenty-six million, two hundred twenty thousand, six hundred ninety-seven".