220847 has 8 divisors (see below), whose sum is σ = 255312. Its totient is φ = 188800.

The previous prime is 220841. The next prime is 220859. The reversal of 220847 is 748022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220847 - 2⁶ = 220783 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 (220841) 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 7 ways as a sum of consecutive naturals, for example, 404 + ... + 777.

It is an arithmetic number, because the mean of its divisors is an integer number (31914).

2²²⁰⁸⁴⁷ is an apocalyptic number.

220847 is a deficient number, since it is larger than the sum of its proper divisors (34465).

220847 is a wasteful number, since it uses less digits than its factorization.

220847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 220847 is about 469.9436136389. The cubic root of 220847 is about 60.4454805616.

Adding to 220847 its reverse (748022), we get a palindrome (968869).

The spelling of 220847 in words is "two hundred twenty thousand, eight hundred forty-seven".