6687670 has 24 divisors (see below), whose sum is σ = 13234032. Its totient is φ = 2431440.

The previous prime is 6687631. The next prime is 6687689. The reversal of 6687670 is 767866.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1554 + ... + 3973.

It is an arithmetic number, because the mean of its divisors is an integer number (551418).

Almost surely, 2^6687670 is an apocalyptic number.

6687670 is a deficient number, since it is larger than the sum of its proper divisors (6546362).

6687670 is a wasteful number, since it uses less digits than its factorization.

6687670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556 (or 5545 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 6687670 is about 2586.0529770289. The cubic root of 6687670 is about 188.4046475084.

It can be divided in two parts, 668 and 7670, that added together give a palindrome (8338).

The spelling of 6687670 in words is "six million, six hundred eighty-seven thousand, six hundred seventy".