6667880 has 32 divisors (see below), whose sum is σ = 15179400. Its totient is φ = 2635776.

The previous prime is 6667873. The next prime is 6667889. The reversal of 6667880 is 887666.

It can be written as a sum of positive squares in 4 ways, for example, as 2316484 + 4351396 = 1522^2 + 2086^2 .

It is not an unprimeable number, because it can be changed into a prime (6667889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2624 + ... + 4496.

Almost surely, 2^6667880 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 6667880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7589700).

6667880 is an abundant number, since it is smaller than the sum of its proper divisors (8511520).

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

6667880 is a wasteful number, since it uses less digits than its factorization.

6667880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973 (or 1969 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 6667880 is about 2582.2238477715. The cubic root of 6667880 is about 188.2186229874.

The spelling of 6667880 in words is "six million, six hundred sixty-seven thousand, eight hundred eighty".