226686917 has 4 divisors (see below), whose sum is σ = 227997420. Its totient is φ = 225376416.

The previous prime is 226686907. The next prime is 226686947. The reversal of 226686917 is 719686622.

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

It can be written as a sum of positive squares in 2 ways, for example, as 143256961 + 83429956 = 11969^2 + 9134^2 .

It is a cyclic number.

It is not a de Polignac number, because 226686917 - 2¹⁸ = 226424773 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 (226686907) 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, 654992 + ... + 655337.

It is an arithmetic number, because the mean of its divisors is an integer number (56999355).

Almost surely, 2^226686917 is an apocalyptic number.

It is an amenable number.

226686917 is a deficient number, since it is larger than the sum of its proper divisors (1310503).

226686917 is a wasteful number, since it uses less digits than its factorization.

226686917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310502.

The product of its digits is 435456, while the sum is 47.

The square root of 226686917 is about 15056.1255640354. The cubic root of 226686917 is about 609.7364417281.

The spelling of 226686917 in words is "two hundred twenty-six million, six hundred eighty-six thousand, nine hundred seventeen".