220661853 has 16 divisors (see below), whose sum is σ = 318770496. Its totient is φ = 135233280.

The previous prime is 220661849. The next prime is 220661873. The reversal of 220661853 is 358166022.

It is not a de Polignac number, because 220661853 - 2² = 220661849 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220661803) 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, 48118 + ... + 52503.

It is an arithmetic number, because the mean of its divisors is an integer number (19923156).

Almost surely, 2^220661853 is an apocalyptic number.

It is an amenable number.

220661853 is a deficient number, since it is larger than the sum of its proper divisors (98108643).

220661853 is a wasteful number, since it uses less digits than its factorization.

220661853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100684.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 220661853 is about 14854.6912791885. The cubic root of 220661853 is about 604.2858435708.

The spelling of 220661853 in words is "two hundred twenty million, six hundred sixty-one thousand, eight hundred fifty-three".