2686666807 has 8 divisors (see below), whose sum is σ = 3031975440. Its totient is φ = 2358202560.

The previous prime is 2686666799. The next prime is 2686666811. The reversal of 2686666807 is 7086666862.

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 2686666807 - 2³ = 2686666799 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 (2686666867) 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, 4210758 + ... + 4211395.

It is an arithmetic number, because the mean of its divisors is an integer number (378996930).

Almost surely, 2^2686666807 is an apocalyptic number.

2686666807 is a deficient number, since it is larger than the sum of its proper divisors (345308633).

2686666807 is a wasteful number, since it uses less digits than its factorization.

2686666807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8422193.

The product of its (nonzero) digits is 6967296, while the sum is 55.

The square root of 2686666807 is about 51833.0667335052. The cubic root of 2686666807 is about 1390.1807481946.

Adding to 2686666807 its sum of digits (55), we get a palindrome (2686666862).

The spelling of 2686666807 in words is "two billion, six hundred eighty-six million, six hundred sixty-six thousand, eight hundred seven".