220661573 has 16 divisors (see below), whose sum is σ = 254016000. Its totient is φ = 189575280.

The previous prime is 220661561. The next prime is 220661603. The reversal of 220661573 is 375166022.

It is a cyclic number.

It is not a de Polignac number, because 220661573 - 2¹⁰ = 220660549 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 (220661543) 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 15 ways as a sum of consecutive naturals, for example, 104078 + ... + 106176.

It is an arithmetic number, because the mean of its divisors is an integer number (15876000).

Almost surely, 2^220661573 is an apocalyptic number.

It is an amenable number.

220661573 is a deficient number, since it is larger than the sum of its proper divisors (33354427).

220661573 is a wasteful number, since it uses less digits than its factorization.

220661573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 220661573 is about 14854.6818545535. The cubic root of 220661573 is about 604.2855879759.

The spelling of 220661573 in words is "two hundred twenty million, six hundred sixty-one thousand, five hundred seventy-three".