624893 has 4 divisors (see below), whose sum is σ = 641820. Its totient is φ = 607968.

The previous prime is 624859. The next prime is 624917. The reversal of 624893 is 398426.

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 267289 + 357604 = 517^2 + 598^2 .

It is a cyclic number.

It is not a de Polignac number, because 624893 - 2⁶ = 624829 is a prime.

It is a super-2 number, since 2×624893² = 780982522898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624803) 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, 8408 + ... + 8481.

It is an arithmetic number, because the mean of its divisors is an integer number (160455).

2⁶²⁴⁸⁹³ is an apocalyptic number.

It is an amenable number.

624893 is a deficient number, since it is larger than the sum of its proper divisors (16927).

624893 is a wasteful number, since it uses less digits than its factorization.

624893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16926.

The product of its digits is 10368, while the sum is 32.

The square root of 624893 is about 790.5017394035. The cubic root of 624893 is about 85.4939179240.

The spelling of 624893 in words is "six hundred twenty-four thousand, eight hundred ninety-three".