5871321637 has 4 divisors (see below), whose sum is σ = 6216693516. Its totient is φ = 5525949760.

The previous prime is 5871321629. The next prime is 5871321649. The reversal of 5871321637 is 7361231785.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2460060801 + 3411260836 = 49599^2 + 58406^2 .

It is a cyclic number.

It is not a de Polignac number, because 5871321637 - 2³ = 5871321629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5871321593 and 5871321602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5871321697) 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 3 ways as a sum of consecutive naturals, for example, 172685914 + ... + 172685947.

It is an arithmetic number, because the mean of its divisors is an integer number (1554173379).

Almost surely, 2^5871321637 is an apocalyptic number.

It is an amenable number.

5871321637 is a deficient number, since it is larger than the sum of its proper divisors (345371879).

5871321637 is a wasteful number, since it uses less digits than its factorization.

5871321637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345371878.

The product of its digits is 211680, while the sum is 43.

The square root of 5871321637 is about 76624.5498322829. The cubic root of 5871321637 is about 1804.0363778364.

The spelling of 5871321637 in words is "five billion, eight hundred seventy-one million, three hundred twenty-one thousand, six hundred thirty-seven".