220170769 has 12 divisors (see below), whose sum is σ = 275819124. Its totient is φ = 174200544.

The previous prime is 220170767. The next prime is 220170817. The reversal of 220170769 is 967071022.

It can be written as a sum of positive squares in 2 ways, for example, as 93315600 + 126855169 = 9660^2 + 11263^2 .

It is not a de Polignac number, because 220170769 - 2¹ = 220170767 is a prime.

It is a super-2 number, since 2×220170769² = 96950335044102722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220170761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172182 + ... + 173455.

It is an arithmetic number, because the mean of its divisors is an integer number (22984927).

Almost surely, 2^220170769 is an apocalyptic number.

It is an amenable number.

220170769 is a deficient number, since it is larger than the sum of its proper divisors (55648355).

220170769 is a wasteful number, since it uses less digits than its factorization.

220170769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345664 (or 345657 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 220170769 is about 14838.1524793352. The cubic root of 220170769 is about 603.8372302724.

The spelling of 220170769 in words is "two hundred twenty million, one hundred seventy thousand, seven hundred sixty-nine".