223897 has 4 divisors (see below), whose sum is σ = 225316. Its totient is φ = 222480.

The previous prime is 223849. The next prime is 223903. The reversal of 223897 is 798322.

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

It can be written as a sum of positive squares in 2 ways, for example, as 67081 + 156816 = 259^2 + 396^2 .

It is a cyclic number.

It is not a de Polignac number, because 223897 - 2¹¹ = 221849 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (223837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438 + ... + 799.

It is an arithmetic number, because the mean of its divisors is an integer number (56329).

2²²³⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

223897 is a deficient number, since it is larger than the sum of its proper divisors (1419).

223897 is a wasteful number, since it uses less digits than its factorization.

223897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418.

The product of its digits is 6048, while the sum is 31.

The square root of 223897 is about 473.1775565261. The cubic root of 223897 is about 60.7224694192.

The spelling of 223897 in words is "two hundred twenty-three thousand, eight hundred ninety-seven".