226639897 has 6 divisors (see below), whose sum is σ = 249116714. Its totient is φ = 206036160.

The previous prime is 226639891. The next prime is 226639913. The reversal of 226639897 is 798936622.

It can be written as a sum of positive squares in only one way, i.e., 224130841 + 2509056 = 14971^2 + 1584^2 .

It is a de Polignac number, because none of the positive numbers 2^k-226639897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (226639891) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 936408 + ... + 936649.

Almost surely, 2^226639897 is an apocalyptic number.

It is an amenable number.

226639897 is a deficient number, since it is larger than the sum of its proper divisors (22476817).

226639897 is a wasteful number, since it uses less digits than its factorization.

226639897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873079 (or 1873068 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 52.

The square root of 226639897 is about 15054.5639923579. The cubic root of 226639897 is about 609.6942810977.

The spelling of 226639897 in words is "two hundred twenty-six million, six hundred thirty-nine thousand, eight hundred ninety-seven".