784223 has 4 divisors (see below), whose sum is σ = 855528. Its totient is φ = 712920.

The previous prime is 784219. The next prime is 784229. The reversal of 784223 is 322487.

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 784223 - 2² = 784219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 784192 and 784201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (784229) 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, 35636 + ... + 35657.

It is an arithmetic number, because the mean of its divisors is an integer number (213882).

2⁷⁸⁴²²³ is an apocalyptic number.

784223 is a deficient number, since it is larger than the sum of its proper divisors (71305).

784223 is a wasteful number, since it uses less digits than its factorization.

784223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71304.

The product of its digits is 2688, while the sum is 26.

The square root of 784223 is about 885.5636623078. The cubic root of 784223 is about 92.2174675914.

The spelling of 784223 in words is "seven hundred eighty-four thousand, two hundred twenty-three".