6605994 has 16 divisors (see below), whose sum is σ = 13436640. Its totient is φ = 2164560.

The previous prime is 6605987. The next prime is 6606011. The reversal of 6605994 is 4995066.

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, 8977 + ... + 9684.

It is an arithmetic number, because the mean of its divisors is an integer number (839790).

Almost surely, 2^6605994 is an apocalyptic number.

6605994 is an abundant number, since it is smaller than the sum of its proper divisors (6830646).

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

6605994 is a wasteful number, since it uses less digits than its factorization.

6605994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18725.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 6605994 is about 2570.2128316542. The cubic root of 6605994 is about 187.6345132544.

The spelling of 6605994 in words is "six million, six hundred five thousand, nine hundred ninety-four".