7666685 has 24 divisors (see below), whose sum is σ = 10242144. Its totient is φ = 5503680.

The previous prime is 7666669. The next prime is 7666693. The reversal of 7666685 is 5866667.

It is not a de Polignac number, because 7666685 - 2⁴ = 7666669 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36230 + ... + 36440.

It is an arithmetic number, because the mean of its divisors is an integer number (426756).

Almost surely, 2^7666685 is an apocalyptic number.

It is an amenable number.

7666685 is a deficient number, since it is larger than the sum of its proper divisors (2575459).

7666685 is a wasteful number, since it uses less digits than its factorization.

7666685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 272 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 7666685 is about 2768.8779315817. The cubic root of 7666685 is about 197.1828804979.

The spelling of 7666685 in words is "seven million, six hundred sixty-six thousand, six hundred eighty-five".