226657197 has 20 divisors (see below), whose sum is σ = 364633500. Its totient is φ = 139480704.

The previous prime is 226657187. The next prime is 226657201. The reversal of 226657197 is 791756622.

It can be written as a sum of positive squares in 2 ways, for example, as 118788201 + 107868996 = 10899^2 + 10386^2 .

It is not a de Polignac number, because 226657197 - 2¹⁵ = 226624429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226657187) 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 19 ways as a sum of consecutive naturals, for example, 106572 + ... + 108677.

It is an arithmetic number, because the mean of its divisors is an integer number (18231675).

Almost surely, 2^226657197 is an apocalyptic number.

226657197 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

226657197 is a deficient number, since it is larger than the sum of its proper divisors (137976303).

226657197 is a wasteful number, since it uses less digits than its factorization.

226657197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215274 (or 215265 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 226657197 is about 15055.1385579808. The cubic root of 226657197 is about 609.7097938749.

The spelling of 226657197 in words is "two hundred twenty-six million, six hundred fifty-seven thousand, one hundred ninety-seven".