6687369 has 24 divisors (see below), whose sum is σ = 10584392. Its totient is φ = 4043520.

The previous prime is 6687367. The next prime is 6687379. The reversal of 6687369 is 9637866.

It can be written as a sum of positive squares in 4 ways, for example, as 927369 + 5760000 = 963^2 + 2400^2 .

It is not a de Polignac number, because 6687369 - 2¹ = 6687367 is a prime.

It is a super-2 number, since 2×6687369² = 89441808284322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6687367) 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, 6669 + ... + 7605.

Almost surely, 2^6687369 is an apocalyptic number.

It is an amenable number.

6687369 is a deficient number, since it is larger than the sum of its proper divisors (3897023).

6687369 is a wasteful number, since it uses less digits than its factorization.

6687369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017 (or 1014 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 6687369 is about 2585.9947795771. The cubic root of 6687369 is about 188.4018208812.

It can be divided in two parts, 6687 and 369, that added together give a square (7056 = 84²).

The spelling of 6687369 in words is "six million, six hundred eighty-seven thousand, three hundred sixty-nine".