220770173 has 4 divisors (see below), whose sum is σ = 237752508. Its totient is φ = 203787840.

The previous prime is 220770133. The next prime is 220770197. The reversal of 220770173 is 371077022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 371077022 = 2 ⋅185538511.

It can be written as a sum of positive squares in 2 ways, for example, as 148401124 + 72369049 = 12182^2 + 8507^2 .

It is a cyclic number.

It is not a de Polignac number, because 220770173 - 2²⁰ = 219721597 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 (220770133) 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, 8491148 + ... + 8491173.

It is an arithmetic number, because the mean of its divisors is an integer number (59438127).

Almost surely, 2^220770173 is an apocalyptic number.

It is an amenable number.

220770173 is a deficient number, since it is larger than the sum of its proper divisors (16982335).

220770173 is a wasteful number, since it uses less digits than its factorization.

220770173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16982334.

The product of its (nonzero) digits is 4116, while the sum is 29.

The square root of 220770173 is about 14858.3368180964. The cubic root of 220770173 is about 604.3847060521.

The spelling of 220770173 in words is "two hundred twenty million, seven hundred seventy thousand, one hundred seventy-three".