6840005637 has 4 divisors (see below), whose sum is σ = 9120007520. Its totient is φ = 4560003756.

The previous prime is 6840005609. The next prime is 6840005651. The reversal of 6840005637 is 7365000486.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6840005637 - 2¹⁵ = 6839972869 is a prime.

It is a super-2 number, since 2×6840005637² = 93571354228383551538, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6840005595 and 6840005604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6840004637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1140000937 + ... + 1140000942.

It is an arithmetic number, because the mean of its divisors is an integer number (2280001880).

Almost surely, 2^6840005637 is an apocalyptic number.

It is an amenable number.

6840005637 is a deficient number, since it is larger than the sum of its proper divisors (2280001883).

6840005637 is a wasteful number, since it uses less digits than its factorization.

6840005637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280001882.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 6840005637 is about 82704.3265917812. The cubic root of 6840005637 is about 1898.2445130678.

The spelling of 6840005637 in words is "six billion, eight hundred forty million, five thousand, six hundred thirty-seven".