624340 has 48 divisors (see below), whose sum is σ = 1451520. Its totient is φ = 224640.

The previous prime is 624331. The next prime is 624347. The reversal of 624340 is 43426.

624340 = T₁₈₅ + T₁₈₆ + ... + T₂₁₅.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11754 + ... + 11806.

It is an arithmetic number, because the mean of its divisors is an integer number (30240).

2⁶²⁴³⁴⁰ 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 624340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725760).

624340 is an abundant number, since it is smaller than the sum of its proper divisors (827180).

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

624340 is a wasteful number, since it uses less digits than its factorization.

624340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 624340 is about 790.1518841337. The cubic root of 624340 is about 85.4686911573.

Adding to 624340 its reverse (43426), we get a palindrome (667766).

The spelling of 624340 in words is "six hundred twenty-four thousand, three hundred forty".