2686837213 has 2 divisors, whose sum is σ = 2686837214. Its totient is φ = 2686837212.

The previous prime is 2686837189. The next prime is 2686837289. The reversal of 2686837213 is 3127386862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2186778169 + 500059044 = 46763^2 + 22362^2 .

It is a cyclic number.

It is not a de Polignac number, because 2686837213 - 2²¹ = 2684740061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2686837313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1343418606 + 1343418607.

It is an arithmetic number, because the mean of its divisors is an integer number (1343418607).

Almost surely, 2^2686837213 is an apocalyptic number.

It is an amenable number.

2686837213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2686837213 is an equidigital number, since it uses as much as digits as its factorization.

2686837213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 46.

The square root of 2686837213 is about 51834.7105036770. The cubic root of 2686837213 is about 1390.2101390284.

The spelling of 2686837213 in words is "two billion, six hundred eighty-six million, eight hundred thirty-seven thousand, two hundred thirteen".