624569 has 4 divisors (see below), whose sum is σ = 681360. Its totient is φ = 567780.

The previous prime is 624541. The next prime is 624577. The reversal of 624569 is 965426.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 624569 - 2⁸ = 624313 is a prime.

It is a super-2 number, since 2×624569² = 780172871522, which contains 22 as substring.

It is a Duffinian number.

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 in 3 ways as a sum of consecutive naturals, for example, 28379 + ... + 28400.

It is an arithmetic number, because the mean of its divisors is an integer number (170340).

2⁶²⁴⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

624569 is a deficient number, since it is larger than the sum of its proper divisors (56791).

624569 is a wasteful number, since it uses less digits than its factorization.

624569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56790.

The product of its digits is 12960, while the sum is 32.

The square root of 624569 is about 790.2967796973. The cubic root of 624569 is about 85.4791394909.

The spelling of 624569 in words is "six hundred twenty-four thousand, five hundred sixty-nine".