624429 has 20 divisors (see below), whose sum is σ = 1006236. Its totient is φ = 383616.

The previous prime is 624419. The next prime is 624443. The reversal of 624429 is 924426.

624429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 227529 + 396900 = 477^2 + 630^2 .

It is not a de Polignac number, because 624429 - 2¹⁶ = 558893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624419) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 757 + ... + 1349.

2⁶²⁴⁴²⁹ is an apocalyptic number.

It is an amenable number.

624429 is a deficient number, since it is larger than the sum of its proper divisors (381807).

624429 is a wasteful number, since it uses less digits than its factorization.

624429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618 (or 609 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 624429 is about 790.2082004130. The cubic root of 624429 is about 85.4727521669.

The spelling of 624429 in words is "six hundred twenty-four thousand, four hundred twenty-nine".