227748643 has 4 divisors (see below), whose sum is σ = 241145640. Its totient is φ = 214351648.

The previous prime is 227748641. The next prime is 227748679. The reversal of 227748643 is 346847722.

227748643 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.

It is a cyclic number.

It is not a de Polignac number, because 227748643 - 2¹ = 227748641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 227748643.

It is not an unprimeable number, because it can be changed into a prime (227748641) 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, 6698473 + ... + 6698506.

It is an arithmetic number, because the mean of its divisors is an integer number (60286410).

Almost surely, 2^227748643 is an apocalyptic number.

227748643 is a deficient number, since it is larger than the sum of its proper divisors (13396997).

227748643 is a wasteful number, since it uses less digits than its factorization.

227748643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13396996.

The product of its digits is 451584, while the sum is 43.

The square root of 227748643 is about 15091.3433133038. The cubic root of 227748643 is about 610.6868935236.

The spelling of 227748643 in words is "two hundred twenty-seven million, seven hundred forty-eight thousand, six hundred forty-three".