6666707677 has 8 divisors (see below), whose sum is σ = 7630255296. Its totient is φ = 5705950272.

The previous prime is 6666707627. The next prime is 6666707689. The reversal of 6666707677 is 7767076666.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6666707677 - 2¹⁹ = 6666183389 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 (6666707627) 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, 692428 + ... + 701989.

It is an arithmetic number, because the mean of its divisors is an integer number (953781912).

Almost surely, 2^6666707677 is an apocalyptic number.

It is an amenable number.

6666707677 is a deficient number, since it is larger than the sum of its proper divisors (963547619).

6666707677 is a wasteful number, since it uses less digits than its factorization.

6666707677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395107.

The product of its (nonzero) digits is 18670176, while the sum is 58.

The square root of 6666707677 is about 81649.9092283635. The cubic root of 6666707677 is about 1882.0759169743.

The spelling of 6666707677 in words is "six billion, six hundred sixty-six million, seven hundred seven thousand, six hundred seventy-seven".