220797 has 6 divisors (see below), whose sum is σ = 318942. Its totient is φ = 147192.

The previous prime is 220793. The next prime is 220807. The reversal of 220797 is 797022.

It can be written as a sum of positive squares in only one way, i.e., 125316 + 95481 = 354^2 + 309^2 .

It is not a de Polignac number, because 220797 - 2² = 220793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220793) 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 5 ways as a sum of consecutive naturals, for example, 12258 + ... + 12275.

It is an arithmetic number, because the mean of its divisors is an integer number (53157).

2²²⁰⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

220797 is a deficient number, since it is larger than the sum of its proper divisors (98145).

220797 is a wasteful number, since it uses less digits than its factorization.

220797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24539 (or 24536 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 220797 is about 469.8904127560. The cubic root of 220797 is about 60.4409185766.

It can be divided in two parts, 2207 and 97, that added together give a square (2304 = 48²).

The spelling of 220797 in words is "two hundred twenty thousand, seven hundred ninety-seven".