6661088 has 48 divisors (see below), whose sum is σ = 15168384. Its totient is φ = 2820480.

The previous prime is 6661079. The next prime is 6661091. The reversal of 6661088 is 8801666.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29231 + ... + 29457.

It is an arithmetic number, because the mean of its divisors is an integer number (316008).

Almost surely, 2^6661088 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 6661088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7584192).

6661088 is an abundant number, since it is smaller than the sum of its proper divisors (8507296).

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

6661088 is a wasteful number, since it uses less digits than its factorization.

6661088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 6661088 is about 2580.9083672227. The cubic root of 6661088 is about 188.1546938629.

The spelling of 6661088 in words is "six million, six hundred sixty-one thousand, eighty-eight".