2686666862 has 16 divisors (see below), whose sum is σ = 4439895984. Its totient is φ = 1209120000.

The previous prime is 2686666849. The next prime is 2686666867.

2686666862 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 2686666798 and 2686666807.

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, 602339 + ... + 606782.

It is an arithmetic number, because the mean of its divisors is an integer number (277493499).

Almost surely, 2^2686666862 is an apocalyptic number.

2686666862 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2686666862 is a deficient number, since it is larger than the sum of its proper divisors (1753229122).

2686666862 is a wasteful number, since it uses less digits than its factorization.

2686666862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209235.

The product of its digits is 11943936, while the sum is 56.

The square root of 2686666862 is about 51833.0672640545. The cubic root of 2686666862 is about 1390.1807576810.

The spelling of 2686666862 in words is "two billion, six hundred eighty-six million, six hundred sixty-six thousand, eight hundred sixty-two".