7956666 has 24 divisors (see below), whose sum is σ = 17989920. Its totient is φ = 2536776.

The previous prime is 7956661. The next prime is 7956667. The reversal of 7956666 is 6666597.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7956661) 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 11 ways as a sum of consecutive naturals, for example, 9196 + ... + 10023.

It is an arithmetic number, because the mean of its divisors is an integer number (749580).

Almost surely, 2^7956666 is an apocalyptic number.

7956666 is an abundant number, since it is smaller than the sum of its proper divisors (10033254).

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

7956666 is a wasteful number, since it uses less digits than its factorization.

7956666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19250 (or 19247 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 7956666 is about 2820.7562815671. The cubic root of 7956666 is about 199.6382293378.

The spelling of 7956666 in words is "seven million, nine hundred fifty-six thousand, six hundred sixty-six".