623120 has 20 divisors (see below), whose sum is σ = 1448940. Its totient is φ = 249216.

The previous prime is 623107. The next prime is 623171. The reversal of 623120 is 21326.

It can be written as a sum of positive squares in 2 ways, for example, as 295936 + 327184 = 544^2 + 572^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 623095 and 623104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3815 + ... + 3974.

It is an arithmetic number, because the mean of its divisors is an integer number (72447).

2⁶²³¹²⁰ is an apocalyptic number.

It is an amenable number.

623120 is an abundant number, since it is smaller than the sum of its proper divisors (825820).

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

623120 is a wasteful number, since it uses less digits than its factorization.

623120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7802 (or 7796 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 623120 is about 789.3795031542. The cubic root of 623120 is about 85.4129844404.

Adding to 623120 its reverse (21326), we get a palindrome (644446).

The spelling of 623120 in words is "six hundred twenty-three thousand, one hundred twenty".