624489 has 16 divisors (see below), whose sum is σ = 878592. Its totient is φ = 394128.

The previous prime is 624487. The next prime is 624497. The reversal of 624489 is 984426.

624489 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 624489 - 2¹ = 624487 is a prime.

It is a super-2 number, since 2×624489² = 779973022242, which contains 22 as substring.

It is a Curzon number.

624489 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (624487) 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, 6012 + ... + 6114.

It is an arithmetic number, because the mean of its divisors is an integer number (54912).

2⁶²⁴⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

624489 is a deficient number, since it is larger than the sum of its proper divisors (254103).

624489 is a wasteful number, since it uses less digits than its factorization.

624489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196.

The product of its digits is 13824, while the sum is 33.

The square root of 624489 is about 790.2461641792. The cubic root of 624489 is about 85.4754897083.

The spelling of 624489 in words is "six hundred twenty-four thousand, four hundred eighty-nine".