223699 has 4 divisors (see below), whose sum is σ = 255664. Its totient is φ = 191736.

The previous prime is 223697. The next prime is 223711. The reversal of 223699 is 996322.

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

It is a cyclic number.

It is not a de Polignac number, because 223699 - 2¹ = 223697 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 2¹⁷ + 6⁶ + 3⁸ + 9² + 9⁴ .

It is a Duffinian number.

223699 is a lucky number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 223699.

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 in 3 ways as a sum of consecutive naturals, for example, 15972 + ... + 15985.

It is an arithmetic number, because the mean of its divisors is an integer number (63916).

2²²³⁶⁹⁹ is an apocalyptic number.

223699 is a deficient number, since it is larger than the sum of its proper divisors (31965).

223699 is an equidigital number, since it uses as much as digits as its factorization.

223699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31964.

The product of its digits is 5832, while the sum is 31.

The square root of 223699 is about 472.9682864633. The cubic root of 223699 is about 60.7045644676.

It can be divided in two parts, 22 and 3699, that added together give a square (3721 = 61²).

The spelling of 223699 in words is "two hundred twenty-three thousand, six hundred ninety-nine".