7664866 has 24 divisors (see below), whose sum is σ = 13310640. Its totient is φ = 3298680.

The previous prime is 7664863. The next prime is 7664873. The reversal of 7664866 is 6684667.

It is not an unprimeable number, because it can be changed into a prime (7664863) 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, 3765 + ... + 5431.

It is an arithmetic number, because the mean of its divisors is an integer number (554610).

Almost surely, 2^7664866 is an apocalyptic number.

7664866 is a deficient number, since it is larger than the sum of its proper divisors (5645774).

7664866 is a wasteful number, since it uses less digits than its factorization.

7664866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710 (or 1699 counting only the distinct ones).

The product of its digits is 290304, while the sum is 43.

The square root of 7664866 is about 2768.5494396886. The cubic root of 7664866 is about 197.1672847078.

The spelling of 7664866 in words is "seven million, six hundred sixty-four thousand, eight hundred sixty-six".