6809631 has 4 divisors (see below), whose sum is σ = 9079512. Its totient is φ = 4539752.

The previous prime is 6809629. The next prime is 6809641. The reversal of 6809631 is 1369086.

6809631 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 6809631 - 2¹ = 6809629 is a prime.

It is a super-2 number, since 2×6809631² = 92742148712322, which contains 22 as substring.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 6809592 and 6809601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6809611) 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, 1134936 + ... + 1134941.

It is an arithmetic number, because the mean of its divisors is an integer number (2269878).

Almost surely, 2^6809631 is an apocalyptic number.

6809631 is a deficient number, since it is larger than the sum of its proper divisors (2269881).

6809631 is a wasteful number, since it uses less digits than its factorization.

6809631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269880.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 6809631 is about 2609.5269686286. The cubic root of 6809631 is about 189.5430477967.

The spelling of 6809631 in words is "six million, eight hundred nine thousand, six hundred thirty-one".