618779223 has 8 divisors (see below), whose sum is σ = 916710000. Its totient is φ = 412519464.

The previous prime is 618779207. The next prime is 618779279. The reversal of 618779223 is 322977816.

618779223 is a `hidden beast` number, since 618 + 7 + 7 + 9 + 2 + 23 = 666.

618779223 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 618779223 - 2⁴ = 618779207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618779123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11458848 + ... + 11458901.

It is an arithmetic number, because the mean of its divisors is an integer number (114588750).

Almost surely, 2^618779223 is an apocalyptic number.

618779223 is a deficient number, since it is larger than the sum of its proper divisors (297930777).

618779223 is a wasteful number, since it uses less digits than its factorization.

618779223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22917758 (or 22917752 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 618779223 is about 24875.2733251315. The cubic root of 618779223 is about 852.1418753024.

The spelling of 618779223 in words is "six hundred eighteen million, seven hundred seventy-nine thousand, two hundred twenty-three".