7666671 has 8 divisors (see below), whose sum is σ = 10760320. Its totient is φ = 4842072.

The previous prime is 7666669. The next prime is 7666693. The reversal of 7666671 is 1766667.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7666671 - 2¹ = 7666669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7666621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67195 + ... + 67308.

It is an arithmetic number, because the mean of its divisors is an integer number (1345040).

Almost surely, 2^7666671 is an apocalyptic number.

7666671 is a deficient number, since it is larger than the sum of its proper divisors (3093649).

7666671 is a wasteful number, since it uses less digits than its factorization.

7666671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134525.

The product of its digits is 63504, while the sum is 39.

The square root of 7666671 is about 2768.8754034806. The cubic root of 7666671 is about 197.1827604737.

The spelling of 7666671 in words is "seven million, six hundred sixty-six thousand, six hundred seventy-one".