624091 has 8 divisors (see below), whose sum is σ = 683984. Its totient is φ = 565920.

The previous prime is 624089. The next prime is 624097. The reversal of 624091 is 190426.

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 624091 - 2¹ = 624089 is a prime.

It is a Duffinian number.

624091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (624097) 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 7 ways as a sum of consecutive naturals, for example, 400 + ... + 1186.

It is an arithmetic number, because the mean of its divisors is an integer number (85498).

2⁶²⁴⁰⁹¹ is an apocalyptic number.

624091 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

624091 is a deficient number, since it is larger than the sum of its proper divisors (59893).

624091 is a wasteful number, since it uses less digits than its factorization.

624091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 624091 is about 789.9943037769. The cubic root of 624091 is about 85.4573274058.

The spelling of 624091 in words is "six hundred twenty-four thousand, ninety-one".