22256697 has 4 divisors (see below), whose sum is σ = 29675600. Its totient is φ = 14837796.

The previous prime is 22256693. The next prime is 22256711. The reversal of 22256697 is 79665222.

It is a happy number.

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 not a de Polignac number, because 22256697 - 2² = 22256693 is a prime.

It is a super-2 number, since 2×22256697² = 990721122699618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22256693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3709447 + ... + 3709452.

It is an arithmetic number, because the mean of its divisors is an integer number (7418900).

Almost surely, 2^22256697 is an apocalyptic number.

It is an amenable number.

22256697 is a deficient number, since it is larger than the sum of its proper divisors (7418903).

22256697 is an equidigital number, since it uses as much as digits as its factorization.

22256697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7418902.

The product of its digits is 90720, while the sum is 39.

The square root of 22256697 is about 4717.7003932001. The cubic root of 22256697 is about 281.2895324184.

The spelling of 22256697 in words is "twenty-two million, two hundred fifty-six thousand, six hundred ninety-seven".