226666405 has 40 divisors (see below), whose sum is σ = 322675200. Its totient is φ = 152818848.

The previous prime is 226666397. The next prime is 226666439. The reversal of 226666405 is 504666622.

It is a happy number.

226666405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 226666405 - 2³ = 226666397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 948276 + ... + 948514.

It is an arithmetic number, because the mean of its divisors is an integer number (8066880).

Almost surely, 2^226666405 is an apocalyptic number.

It is an amenable number.

226666405 is a deficient number, since it is larger than the sum of its proper divisors (96008795).

226666405 is an frugal number, since it uses more digits than its factorization.

226666405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 226666405 is about 15055.4443640830. Note that the first 3 decimals coincide. The cubic root of 226666405 is about 609.7180502960.

The spelling of 226666405 in words is "two hundred twenty-six million, six hundred sixty-six thousand, four hundred five".