624913 has 4 divisors (see below), whose sum is σ = 627748. Its totient is φ = 622080.

The previous prime is 624859. The next prime is 624917. The reversal of 624913 is 319426.

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

It can be written as a sum of positive squares in 2 ways, for example, as 425104 + 199809 = 652^2 + 447^2 .

It is a cyclic number.

It is not a de Polignac number, because 624913 - 2⁹ = 624401 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 (624917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1056 + ... + 1537.

It is an arithmetic number, because the mean of its divisors is an integer number (156937).

2⁶²⁴⁹¹³ is an apocalyptic number.

It is an amenable number.

624913 is a deficient number, since it is larger than the sum of its proper divisors (2835).

624913 is a wasteful number, since it uses less digits than its factorization.

624913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2834.

The product of its digits is 1296, while the sum is 25.

The square root of 624913 is about 790.5143894959. The cubic root of 624913 is about 85.4948300055.

The spelling of 624913 in words is "six hundred twenty-four thousand, nine hundred thirteen".