2686005 has 24 divisors (see below), whose sum is σ = 5321472. Its totient is φ = 1227744.

The previous prime is 2685989. The next prime is 2686007. The reversal of 2686005 is 5006862.

It is not a de Polignac number, because 2686005 - 2⁴ = 2685989 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2686005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2686007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3949 + ... + 4578.

It is an arithmetic number, because the mean of its divisors is an integer number (221728).

2^2686005 is an apocalyptic number.

It is an amenable number.

2686005 is a deficient number, since it is larger than the sum of its proper divisors (2635467).

2686005 is a wasteful number, since it uses less digits than its factorization.

2686005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8545 (or 8542 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 2686005 is about 1638.9035969208. The cubic root of 2686005 is about 139.0066591016.

The spelling of 2686005 in words is "two million, six hundred eighty-six thousand, five".