6661936 has 20 divisors (see below), whose sum is σ = 12970152. Its totient is φ = 3314816.

The previous prime is 6661933. The next prime is 6661957. The reversal of 6661936 is 6391666.

It is a junction number, because it is equal to n+sod(n) for n = 6661895 and 6661904.

It is not an unprimeable number, because it can be changed into a prime (6661933) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2835 + ... + 4621.

Almost surely, 2^6661936 is an apocalyptic number.

It is an amenable number.

6661936 is a deficient number, since it is larger than the sum of its proper divisors (6308216).

6661936 is a wasteful number, since it uses less digits than its factorization.

6661936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028 (or 2022 counting only the distinct ones).

The product of its digits is 34992, while the sum is 37.

The square root of 6661936 is about 2581.0726452388. The cubic root of 6661936 is about 188.1626779645.

The spelling of 6661936 in words is "six million, six hundred sixty-one thousand, nine hundred thirty-six".