6687012 has 48 divisors (see below), whose sum is σ = 16620800. Its totient is φ = 2086560.

The previous prime is 6687011. The next prime is 6687013. The reversal of 6687012 is 2107866.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6687011) and next prime (6687013).

It is a super-2 number, since 2×6687012² = 89432258976288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6687011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31587 + ... + 31797.

Almost surely, 2^6687012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6687012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8310400).

6687012 is an abundant number, since it is smaller than the sum of its proper divisors (9933788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6687012 is a wasteful number, since it uses less digits than its factorization.

6687012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 6687012 is about 2585.9257529945. The cubic root of 6687012 is about 188.3984682599.

It can be divided in two parts, 66 and 87012, that added together give a palindrome (87078).

The spelling of 6687012 in words is "six million, six hundred eighty-seven thousand, twelve".