624130621 has 8 divisors (see below), whose sum is σ = 631796000. Its totient is φ = 616500720.

The previous prime is 624130613. The next prime is 624130627. The reversal of 624130621 is 126031426.

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 624130621 - 2³ = 624130613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624130627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27430 + ... + 44728.

It is an arithmetic number, because the mean of its divisors is an integer number (78974500).

Almost surely, 2^624130621 is an apocalyptic number.

It is an amenable number.

624130621 is a deficient number, since it is larger than the sum of its proper divisors (7665379).

624130621 is a wasteful number, since it uses less digits than its factorization.

624130621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17739.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 624130621 is about 24982.6063692322. The cubic root of 624130621 is about 854.5913581358.

The spelling of 624130621 in words is "six hundred twenty-four million, one hundred thirty thousand, six hundred twenty-one".