623585 has 4 divisors (see below), whose sum is σ = 748308. Its totient is φ = 498864.

The previous prime is 623563. The next prime is 623591. The reversal of 623585 is 585326.

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 414736 + 208849 = 644^2 + 457^2 .

It is a cyclic number.

It is not a de Polignac number, because 623585 - 2⁶ = 623521 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62354 + ... + 62363.

It is an arithmetic number, because the mean of its divisors is an integer number (187077).

2⁶²³⁵⁸⁵ is an apocalyptic number.

It is an amenable number.

623585 is a deficient number, since it is larger than the sum of its proper divisors (124723).

623585 is a wasteful number, since it uses less digits than its factorization.

623585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124722.

The product of its digits is 7200, while the sum is 29.

The square root of 623585 is about 789.6739833628. The cubic root of 623585 is about 85.4342254867.

The spelling of 623585 in words is "six hundred twenty-three thousand, five hundred eighty-five".