220705735 has 4 divisors (see below), whose sum is σ = 264846888. Its totient is φ = 176564584.

The previous prime is 220705687. The next prime is 220705739. The reversal of 220705735 is 537507022.

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 220705735 - 2¹¹ = 220703687 is a prime.

It is a super-2 number, since 2×220705735² = 97422042923780450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220705697 and 220705706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220705739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22070569 + ... + 22070578.

It is an arithmetic number, because the mean of its divisors is an integer number (66211722).

Almost surely, 2^220705735 is an apocalyptic number.

220705735 is a deficient number, since it is larger than the sum of its proper divisors (44141153).

220705735 is an equidigital number, since it uses as much as digits as its factorization.

220705735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44141152.

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 220705735 is about 14856.1682475664. The cubic root of 220705735 is about 604.3258980908.

The spelling of 220705735 in words is "two hundred twenty million, seven hundred five thousand, seven hundred thirty-five".