220465 has 8 divisors (see below), whose sum is σ = 302400. Its totient is φ = 151152.

The previous prime is 220447. The next prime is 220469. The reversal of 220465 is 564022.

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 220465 - 2⁹ = 219953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3115 + ... + 3184.

It is an arithmetic number, because the mean of its divisors is an integer number (37800).

2²²⁰⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

220465 is a deficient number, since it is larger than the sum of its proper divisors (81935).

220465 is an equidigital number, since it uses as much as digits as its factorization.

220465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6311.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 220465 is about 469.5370059963. The cubic root of 220465 is about 60.4106095130.

Adding to 220465 its reverse (564022), we get a palindrome (784487).

The spelling of 220465 in words is "two hundred twenty thousand, four hundred sixty-five".