220797305 has 16 divisors (see below), whose sum is σ = 272208384. Its totient is φ = 171848640.

The previous prime is 220797287. The next prime is 220797307. The reversal of 220797305 is 503797022.

220797305 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 220797305 - 2¹⁶ = 220731769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220797307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37940 + ... + 43370.

It is an arithmetic number, because the mean of its divisors is an integer number (17013024).

Almost surely, 2^220797305 is an apocalyptic number.

It is an amenable number.

220797305 is a deficient number, since it is larger than the sum of its proper divisors (51411079).

220797305 is a wasteful number, since it uses less digits than its factorization.

220797305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5656.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 220797305 is about 14859.2498128270. The cubic root of 220797305 is about 604.4094640677.

The spelling of 220797305 in words is "two hundred twenty million, seven hundred ninety-seven thousand, three hundred five".