6687371 has 8 divisors (see below), whose sum is σ = 6998400. Its totient is φ = 6381760.

The previous prime is 6687367. The next prime is 6687379. The reversal of 6687371 is 1737866.

6687371 = 103² + 104² + ... + 276².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6687371 - 2² = 6687367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6687379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1286 + ... + 3876.

It is an arithmetic number, because the mean of its divisors is an integer number (874800).

Almost surely, 2^6687371 is an apocalyptic number.

6687371 is a deficient number, since it is larger than the sum of its proper divisors (311029).

6687371 is a wasteful number, since it uses less digits than its factorization.

6687371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2709.

The product of its digits is 42336, while the sum is 38.

The square root of 6687371 is about 2585.9951662755. The cubic root of 6687371 is about 188.4018396630.

The spelling of 6687371 in words is "six million, six hundred eighty-seven thousand, three hundred seventy-one".