226727621 has 4 divisors (see below), whose sum is σ = 228118752. Its totient is φ = 225336492.

The previous prime is 226727603. The next prime is 226727647. The reversal of 226727621 is 126727622.

226727621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 226727621 - 2¹⁴ = 226711237 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 (226727681) 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, 695321 + ... + 695646.

It is an arithmetic number, because the mean of its divisors is an integer number (57029688).

Almost surely, 2^226727621 is an apocalyptic number.

It is an amenable number.

226727621 is a deficient number, since it is larger than the sum of its proper divisors (1391131).

226727621 is a wasteful number, since it uses less digits than its factorization.

226727621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391130.

The product of its digits is 28224, while the sum is 35.

The square root of 226727621 is about 15057.4772455415. The cubic root of 226727621 is about 609.7729343896.

Subtracting from 226727621 its reverse (126727622), we obtain a palindrome (99999999).

The spelling of 226727621 in words is "two hundred twenty-six million, seven hundred twenty-seven thousand, six hundred twenty-one".