6787969 has 4 divisors (see below), whose sum is σ = 6793540. Its totient is φ = 6782400.

The previous prime is 6787961. The next prime is 6788021. The reversal of 6787969 is 9697876.

6787969 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, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3196944 + 3591025 = 1788^2 + 1895^2 .

It is a cyclic number.

It is not a de Polignac number, because 6787969 - 2³ = 6787961 is a prime.

It is a super-3 number, since 3×6787969³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6787961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84 + ... + 3685.

It is an arithmetic number, because the mean of its divisors is an integer number (1698385).

Almost surely, 2^6787969 is an apocalyptic number.

It is an amenable number.

6787969 is a deficient number, since it is larger than the sum of its proper divisors (5571).

6787969 is a wasteful number, since it uses less digits than its factorization.

6787969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5570.

The product of its digits is 1143072, while the sum is 52.

The square root of 6787969 is about 2605.3731018800. The cubic root of 6787969 is about 189.3418502610.

The spelling of 6787969 in words is "six million, seven hundred eighty-seven thousand, nine hundred sixty-nine".