220417 has 4 divisors (see below), whose sum is σ = 221616. Its totient is φ = 219220.

The previous prime is 220411. The next prime is 220421. The reversal of 220417 is 714022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220417.

It is not an unprimeable number, because it can be changed into a prime (220411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259 + ... + 712.

It is an arithmetic number, because the mean of its divisors is an integer number (55404).

2²²⁰⁴¹⁷ is an apocalyptic number.

It is an amenable number.

220417 is a deficient number, since it is larger than the sum of its proper divisors (1199).

220417 is an equidigital number, since it uses as much as digits as its factorization.

220417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 220417 is about 469.4858890318. The cubic root of 220417 is about 60.4062249626.

Adding to 220417 its reverse (714022), we get a palindrome (934439).

The spelling of 220417 in words is "two hundred twenty thousand, four hundred seventeen", and thus it is an iban number.