623320 has 16 divisors (see below), whose sum is σ = 1402560. Its totient is φ = 249312.

The previous prime is 623303. The next prime is 623321. The reversal of 623320 is 23326.

It is a junction number, because it is equal to n+sod(n) for n = 623294 and 623303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623321) by changing a digit.

623320 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7752 + ... + 7831.

It is an arithmetic number, because the mean of its divisors is an integer number (87660).

2⁶²³³²⁰ is an apocalyptic number.

It is an amenable number.

623320 is an abundant number, since it is smaller than the sum of its proper divisors (779240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

623320 is a wasteful number, since it uses less digits than its factorization.

623320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15594 (or 15590 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 623320 is about 789.5061747700. The cubic root of 623320 is about 85.4221216689.

Adding to 623320 its reverse (23326), we get a palindrome (646646).

The spelling of 623320 in words is "six hundred twenty-three thousand, three hundred twenty".