987223 has 4 divisors (see below), whose sum is σ = 991800. Its totient is φ = 982648.

The previous prime is 987211. The next prime is 987227. The reversal of 987223 is 322789.

987223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322789 = 59 ⋅5471.

It is a cyclic number.

It is not a de Polignac number, because 987223 - 2⁵ = 987191 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

987223 is a lucky number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987227) 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, 1948 + ... + 2401.

It is an arithmetic number, because the mean of its divisors is an integer number (247950).

2⁹⁸⁷²²³ is an apocalyptic number.

987223 is a deficient number, since it is larger than the sum of its proper divisors (4577).

987223 is a wasteful number, since it uses less digits than its factorization.

987223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4576.

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

The square root of 987223 is about 993.5909621167. The cubic root of 987223 is about 99.5722731055.

The spelling of 987223 in words is "nine hundred eighty-seven thousand, two hundred twenty-three".