621324873 has 24 divisors (see below), whose sum is σ = 967756608. Its totient is φ = 381858912.

The previous prime is 621324863. The next prime is 621324881. The reversal of 621324873 is 378423126.

It is a happy number.

621324873 is a `hidden beast` number, since 621 + 3 + 24 + 8 + 7 + 3 = 666.

It is not a de Polignac number, because 621324873 - 2¹⁰ = 621323849 is a prime.

It is a super-2 number, since 2×621324873² = 772089195616932258, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (621324863) 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 23 ways as a sum of consecutive naturals, for example, 100786 + ... + 106772.

It is an arithmetic number, because the mean of its divisors is an integer number (40323192).

Almost surely, 2^621324873 is an apocalyptic number.

It is an amenable number.

621324873 is a deficient number, since it is larger than the sum of its proper divisors (346431735).

621324873 is a wasteful number, since it uses less digits than its factorization.

621324873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6893 (or 6890 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 621324873 is about 24926.3890886747. The cubic root of 621324873 is about 853.3088434778.

Adding to 621324873 its reverse (378423126), we get a palindrome (999747999).

The spelling of 621324873 in words is "six hundred twenty-one million, three hundred twenty-four thousand, eight hundred seventy-three".