624005 has 8 divisors (see below), whose sum is σ = 769272. Its totient is φ = 485568.

The previous prime is 623989. The next prime is 624007. The reversal of 624005 is 500426.

It can be written as a sum of positive squares in 4 ways, for example, as 376996 + 247009 = 614^2 + 497^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 624005 - 2⁴ = 623989 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1502 + ... + 1871.

It is an arithmetic number, because the mean of its divisors is an integer number (96159).

2⁶²⁴⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

624005 is a deficient number, since it is larger than the sum of its proper divisors (145267).

624005 is a wasteful number, since it uses less digits than its factorization.

624005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3415.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 624005 is about 789.9398711294. The cubic root of 624005 is about 85.4534018737.

The spelling of 624005 in words is "six hundred twenty-four thousand, five".