624424 has 16 divisors (see below), whose sum is σ = 1185300. Its totient is φ = 308352.

The previous prime is 624419. The next prime is 624443. The reversal of 624424 is 424426.

It can be written as a sum of positive squares in 2 ways, for example, as 624100 + 324 = 790^2 + 18^2 .

It is a junction number, because it is equal to n+sod(n) for n = 624395 and 624404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274 + ... + 1150.

2⁶²⁴⁴²⁴ is an apocalyptic number.

It is an amenable number.

624424 is a deficient number, since it is larger than the sum of its proper divisors (560876).

624424 is a wasteful number, since it uses less digits than its factorization.

624424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972 (or 968 counting only the distinct ones).

The product of its digits is 1536, while the sum is 22.

The square root of 624424 is about 790.2050366835. The cubic root of 624424 is about 85.4725240305.

The spelling of 624424 in words is "six hundred twenty-four thousand, four hundred twenty-four".