226540663 has 4 divisors (see below), whose sum is σ = 234352440. Its totient is φ = 218728888.

The previous prime is 226540649. The next prime is 226540693. The reversal of 226540663 is 366045622.

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

It is a cyclic number.

It is not a de Polignac number, because 226540663 - 2⁵ = 226540631 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 (226540693) 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, 3905845 + ... + 3905902.

It is an arithmetic number, because the mean of its divisors is an integer number (58588110).

Almost surely, 2^226540663 is an apocalyptic number.

226540663 is a deficient number, since it is larger than the sum of its proper divisors (7811777).

226540663 is an equidigital number, since it uses as much as digits as its factorization.

226540663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7811776.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 226540663 is about 15051.2678203532. The cubic root of 226540663 is about 609.6052834770.

The spelling of 226540663 in words is "two hundred twenty-six million, five hundred forty thousand, six hundred sixty-three".