6670931661 has 20 divisors (see below), whose sum is σ = 10398492192. Its totient is φ = 4253926248.

The previous prime is 6670931653. The next prime is 6670931671. The reversal of 6670931661 is 1661390766.

It is not a de Polignac number, because 6670931661 - 2³ = 6670931653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6670931621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1788511 + ... + 1792236.

Almost surely, 2^6670931661 is an apocalyptic number.

It is an amenable number.

6670931661 is a deficient number, since it is larger than the sum of its proper divisors (3727560531).

6670931661 is a wasteful number, since it uses less digits than its factorization.

6670931661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3580782 (or 3580773 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 6670931661 is about 81675.7715666035. The cubic root of 6670931661 is about 1882.4733235375.

The spelling of 6670931661 in words is "six billion, six hundred seventy million, nine hundred thirty-one thousand, six hundred sixty-one".