220653 has 6 divisors (see below), whose sum is σ = 318734. Its totient is φ = 147096.

The previous prime is 220613. The next prime is 220663. The reversal of 220653 is 356022.

It can be written as a sum of positive squares in only one way, i.e., 161604 + 59049 = 402^2 + 243^2 .

It is not a de Polignac number, because 220653 - 2⁶ = 220589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220613) 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, 12250 + ... + 12267.

2²²⁰⁶⁵³ is an apocalyptic number.

It is an amenable number.

220653 is a deficient number, since it is larger than the sum of its proper divisors (98081).

220653 is a wasteful number, since it uses less digits than its factorization.

220653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24523 (or 24520 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 220653 is about 469.7371605483. The cubic root of 220653 is about 60.4277762104.

Adding to 220653 its reverse (356022), we get a palindrome (576675).

The spelling of 220653 in words is "two hundred twenty thousand, six hundred fifty-three".