6687231 has 8 divisors (see below), whose sum is σ = 9123840. Its totient is φ = 4354392.

The previous prime is 6687229. The next prime is 6687251. The reversal of 6687231 is 1327866.

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

It is not a de Polignac number, because 6687231 - 2¹ = 6687229 is a prime.

It is a super-2 number, since 2×6687231² = 89438116894722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6687192 and 6687201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6687251) 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, 25791 + ... + 26048.

It is an arithmetic number, because the mean of its divisors is an integer number (1140480).

Almost surely, 2^6687231 is an apocalyptic number.

6687231 is a deficient number, since it is larger than the sum of its proper divisors (2436609).

6687231 is a wasteful number, since it uses less digits than its factorization.

6687231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51885.

The product of its digits is 12096, while the sum is 33.

The square root of 6687231 is about 2585.9680972510. The cubic root of 6687231 is about 188.4005249240.

The spelling of 6687231 in words is "six million, six hundred eighty-seven thousand, two hundred thirty-one".