624040 has 16 divisors (see below), whose sum is σ = 1404180. Its totient is φ = 249600.

The previous prime is 624037. The next prime is 624047. The reversal of 624040 is 40426.

It can be written as a sum of positive squares in 2 ways, for example, as 599076 + 24964 = 774^2 + 158^2 .

It is not an unprimeable number, because it can be changed into a prime (624047) 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, 7761 + ... + 7840.

2⁶²⁴⁰⁴⁰ is an apocalyptic number.

It is an amenable number.

624040 is an abundant number, since it is smaller than the sum of its proper divisors (780140).

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

624040 is a wasteful number, since it uses less digits than its factorization.

624040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15612 (or 15608 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 624040 is about 789.9620244037. The cubic root of 624040 is about 85.4549995175.

Adding to 624040 its reverse (40426), we get a palindrome (664466).

The spelling of 624040 in words is "six hundred twenty-four thousand, forty".