624560 has 40 divisors (see below), whose sum is σ = 1498416. Its totient is φ = 241920.

The previous prime is 624541. The next prime is 624577. The reversal of 624560 is 65426.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

624560 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 7 ways as a sum of consecutive naturals, for example, 2855 + ... + 3065.

2⁶²⁴⁵⁶⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 624560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (749208).

624560 is an abundant number, since it is smaller than the sum of its proper divisors (873856).

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

624560 is a wasteful number, since it uses less digits than its factorization.

624560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 624560 is about 790.2910856134. The cubic root of 624560 is about 85.4787289059.

Adding to 624560 its reverse (65426), we get a palindrome (689986).

The spelling of 624560 in words is "six hundred twenty-four thousand, five hundred sixty".