624506 has 4 divisors (see below), whose sum is σ = 936762. Its totient is φ = 312252.

The previous prime is 624497. The next prime is 624509. The reversal of 624506 is 605426.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 616225 + 8281 = 785^2 + 91^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (624509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156125 + ... + 156128.

2⁶²⁴⁵⁰⁶ is an apocalyptic number.

624506 is a deficient number, since it is larger than the sum of its proper divisors (312256).

624506 is a wasteful number, since it uses less digits than its factorization.

624506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312255.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 624506 is about 790.2569202481. The cubic root of 624506 is about 85.4762653132.

The spelling of 624506 in words is "six hundred twenty-four thousand, five hundred six".