6687772 has 48 divisors (see below), whose sum is σ = 15178240. Its totient is φ = 2503872.

The previous prime is 6687767. The next prime is 6687773. The reversal of 6687772 is 2777866.

Its product of digits (197568) is a multiple of the sum of its prime divisors (1008).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6687773) 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, 6433 + ... + 7399.

Almost surely, 2^6687772 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 6687772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7589120).

6687772 is an abundant number, since it is smaller than the sum of its proper divisors (8490468).

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

6687772 is a wasteful number, since it uses less digits than its factorization.

6687772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010 (or 1008 counting only the distinct ones).

The product of its digits is 197568, while the sum is 43.

The square root of 6687772 is about 2586.0726981274. The cubic root of 6687772 is about 188.4056053495.

The spelling of 6687772 in words is "six million, six hundred eighty-seven thousand, seven hundred seventy-two".