5621664231 has 24 divisors (see below), whose sum is σ = 8182980000. Its totient is φ = 3718896192.

The previous prime is 5621664221. The next prime is 5621664259. The reversal of 5621664231 is 1324661265.

5621664231 is a `hidden beast` number, since 5 + 6 + 2 + 1 + 6 + 642 + 3 + 1 = 666.

It is not a de Polignac number, because 5621664231 - 2¹³ = 5621656039 is a prime.

It is a super-2 number, since 2×5621664231² = 63206217452209642722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5621664221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 692665 + ... + 700733.

It is an arithmetic number, because the mean of its divisors is an integer number (340957500).

Almost surely, 2^5621664231 is an apocalyptic number.

5621664231 is a deficient number, since it is larger than the sum of its proper divisors (2561315769).

5621664231 is a wasteful number, since it uses less digits than its factorization.

5621664231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8663 (or 8660 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 5621664231 is about 74977.7582420280. The cubic root of 5621664231 is about 1778.0950279308.

The spelling of 5621664231 in words is "five billion, six hundred twenty-one million, six hundred sixty-four thousand, two hundred thirty-one".