223694 has 4 divisors (see below), whose sum is σ = 335544. Its totient is φ = 111846.

The previous prime is 223681. The next prime is 223697. The reversal of 223694 is 496322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 496322 = 2 ⋅248161.

It is a d-powerful number, because it can be written as 2 + 2¹⁵ + 6⁶ + 3⁹ + 9⁵ + 4⁸ .

It is a plaindrome in base 16.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55922 + ... + 55925.

It is an arithmetic number, because the mean of its divisors is an integer number (83886).

2²²³⁶⁹⁴ is an apocalyptic number.

223694 is a deficient number, since it is larger than the sum of its proper divisors (111850).

223694 is a wasteful number, since it uses less digits than its factorization.

223694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111849.

The product of its digits is 2592, while the sum is 26.

The square root of 223694 is about 472.9630006671. The cubic root of 223694 is about 60.7041121856.

The spelling of 223694 in words is "two hundred twenty-three thousand, six hundred ninety-four".