624407 has 6 divisors (see below), whose sum is σ = 726408. Its totient is φ = 535164.

The previous prime is 624401. The next prime is 624419. The reversal of 624407 is 704426.

624407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 624407 - 2⁴ = 624391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6323 + ... + 6420.

It is an arithmetic number, because the mean of its divisors is an integer number (121068).

2⁶²⁴⁴⁰⁷ is an apocalyptic number.

624407 is a deficient number, since it is larger than the sum of its proper divisors (102001).

624407 is a wasteful number, since it uses less digits than its factorization.

624407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12757 (or 12750 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 624407 is about 790.1942799084. The cubic root of 624407 is about 85.4717483577.

The spelling of 624407 in words is "six hundred twenty-four thousand, four hundred seven".