6661912 has 32 divisors (see below), whose sum is σ = 12902400. Its totient is φ = 3223584.

The previous prime is 6661901. The next prime is 6661933. The reversal of 6661912 is 2191666.

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, 52393 + ... + 52519.

It is an arithmetic number, because the mean of its divisors is an integer number (403200).

Almost surely, 2^6661912 is an apocalyptic number.

It is an amenable number.

6661912 is a deficient number, since it is larger than the sum of its proper divisors (6240488).

6661912 is a wasteful number, since it uses less digits than its factorization.

6661912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295 (or 291 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 6661912 is about 2581.0679960048. The cubic root of 6661912 is about 188.1624520087.

The spelling of 6661912 in words is "six million, six hundred sixty-one thousand, nine hundred twelve".