6788631 has 4 divisors (see below), whose sum is σ = 9051512. Its totient is φ = 4525752.

The previous prime is 6788609. The next prime is 6788647. The reversal of 6788631 is 1368876.

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

It is not a de Polignac number, because 6788631 - 2¹³ = 6780439 is a prime.

It is a super-2 number, since 2×6788631² = 92171021708322, which contains 22 as substring.

It is a D-number.

It is the 2606-th Hogben number.

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 6788631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6788651) by changing a digit.

It is a nontrivial repunit in base 2605.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1131436 + ... + 1131441.

It is an arithmetic number, because the mean of its divisors is an integer number (2262878).

Almost surely, 2^6788631 is an apocalyptic number.

6788631 is a deficient number, since it is larger than the sum of its proper divisors (2262881).

6788631 is a wasteful number, since it uses less digits than its factorization.

6788631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262880.

The product of its digits is 48384, while the sum is 39.

The square root of 6788631 is about 2605.5001439263. The cubic root of 6788631 is about 189.3480052798.

The spelling of 6788631 in words is "six million, seven hundred eighty-eight thousand, six hundred thirty-one".