5631387613 has 8 divisors (see below), whose sum is σ = 5704054200. Its totient is φ = 5559052800.

The previous prime is 5631387571. The next prime is 5631387623. The reversal of 5631387613 is 3167831365.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 636149284 + 4995238329 = 25222^2 + 70677^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5631387613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5631387613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5631387623) 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 7 ways as a sum of consecutive naturals, for example, 48688 + ... + 116761.

It is an arithmetic number, because the mean of its divisors is an integer number (713006775).

Almost surely, 2^5631387613 is an apocalyptic number.

It is an amenable number.

5631387613 is a deficient number, since it is larger than the sum of its proper divisors (72666587).

5631387613 is a wasteful number, since it uses less digits than its factorization.

5631387613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165887.

The product of its digits is 272160, while the sum is 43.

The square root of 5631387613 is about 75042.5720041631. The cubic root of 5631387613 is about 1779.1195844885.

The spelling of 5631387613 in words is "five billion, six hundred thirty-one million, three hundred eighty-seven thousand, six hundred thirteen".