6787912869 has 24 divisors (see below), whose sum is σ = 10195487640. Its totient is φ = 4346560512.

The previous prime is 6787912867. The next prime is 6787912871. The reversal of 6787912869 is 9682197876.

It is an interprime number because it is at equal distance from previous prime (6787912867) and next prime (6787912871).

It can be written as a sum of positive squares in 4 ways, for example, as 2423592900 + 4364319969 = 49230^2 + 66063^2 .

It is not a de Polignac number, because 6787912869 - 2¹ = 6787912867 is a prime.

It is a super-2 number, since 2×6787912869² = 92151522234271622322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6787912867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17004 + ... + 117749.

It is an arithmetic number, because the mean of its divisors is an integer number (424811985).

Almost surely, 2^6787912869 is an apocalyptic number.

It is an amenable number.

6787912869 is a deficient number, since it is larger than the sum of its proper divisors (3407574771).

6787912869 is a wasteful number, since it uses less digits than its factorization.

6787912869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134981 (or 134978 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 63.

The square root of 6787912869 is about 82388.7909184253. The cubic root of 6787912869 is about 1893.4132835840.

The spelling of 6787912869 in words is "six billion, seven hundred eighty-seven million, nine hundred twelve thousand, eight hundred sixty-nine".