624140 has 24 divisors (see below), whose sum is σ = 1430352. Its totient is φ = 226880.

The previous prime is 624139. The next prime is 624149. The reversal of 624140 is 41426.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (624149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1199 + ... + 1638.

It is an arithmetic number, because the mean of its divisors is an integer number (59598).

2⁶²⁴¹⁴⁰ is an apocalyptic number.

It is an amenable number.

624140 is an abundant number, since it is smaller than the sum of its proper divisors (806212).

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

624140 is a wasteful number, since it uses less digits than its factorization.

624140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857 (or 2855 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 624140 is about 790.0253160501. The cubic root of 624140 is about 85.4595638849.

Adding to 624140 its reverse (41426), we get a palindrome (665566).

The spelling of 624140 in words is "six hundred twenty-four thousand, one hundred forty".