220634 has 8 divisors (see below), whose sum is σ = 334368. Its totient is φ = 109180.

The previous prime is 220613. The next prime is 220663. The reversal of 220634 is 436022.

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

It is a plaindrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302 + ... + 729.

It is an arithmetic number, because the mean of its divisors is an integer number (41796).

2²²⁰⁶³⁴ is an apocalyptic number.

220634 is a deficient number, since it is larger than the sum of its proper divisors (113734).

220634 is a wasteful number, since it uses less digits than its factorization.

220634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 220634 is about 469.7169360370. The cubic root of 220634 is about 60.4260417213.

Adding to 220634 its reverse (436022), we get a palindrome (656656).

The spelling of 220634 in words is "two hundred twenty thousand, six hundred thirty-four".