223654 has 4 divisors (see below), whose sum is σ = 335484. Its totient is φ = 111826.

The previous prime is 223637. The next prime is 223667. The reversal of 223654 is 456322.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×223654² = 100042223432, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

223654 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55912 + ... + 55915.

It is an arithmetic number, because the mean of its divisors is an integer number (83871).

2²²³⁶⁵⁴ is an apocalyptic number.

223654 is a deficient number, since it is larger than the sum of its proper divisors (111830).

223654 is a wasteful number, since it uses less digits than its factorization.

223654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111829.

The product of its digits is 1440, while the sum is 22.

The square root of 223654 is about 472.9207121707. The cubic root of 223654 is about 60.7004936871.

Adding to 223654 its reverse (456322), we get a palindrome (679976).

The spelling of 223654 in words is "two hundred twenty-three thousand, six hundred fifty-four".