624385 has 8 divisors (see below), whose sum is σ = 755136. Its totient is φ = 495600.

The previous prime is 624347. The next prime is 624391. The reversal of 624385 is 583426.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 624385 - 2¹¹ = 622337 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 342 + ... + 1168.

It is an arithmetic number, because the mean of its divisors is an integer number (94392).

2⁶²⁴³⁸⁵ is an apocalyptic number.

It is an amenable number.

624385 is a deficient number, since it is larger than the sum of its proper divisors (130751).

624385 is a wasteful number, since it uses less digits than its factorization.

624385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983.

The product of its digits is 5760, while the sum is 28.

The square root of 624385 is about 790.1803591586. The cubic root of 624385 is about 85.4707445250.

It can be divided in two parts, 6243 and 85, that added together give a triangular number (6328 = T₁₁₂).

The spelling of 624385 in words is "six hundred twenty-four thousand, three hundred eighty-five".