2686674599689 has 2 divisors, whose sum is σ = 2686674599690. Its totient is φ = 2686674599688.

The previous prime is 2686674599597. The next prime is 2686674599743. The reversal of 2686674599689 is 9869954766862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2316118734400 + 370555865289 = 1521880^2 + 608733^2 .

It is a cyclic number.

It is not a de Polignac number, because 2686674599689 - 2¹¹ = 2686674597641 is a prime.

It is a super-2 number, since 2×2686674599689² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2686674519689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1343337299844 + 1343337299845.

It is an arithmetic number, because the mean of its divisors is an integer number (1343337299845).

Almost surely, 2^{2686674599689} is an apocalyptic number.

It is an amenable number.

2686674599689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2686674599689 is an equidigital number, since it uses as much as digits as its factorization.

2686674599689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16930529280, while the sum is 85.

The spelling of 2686674599689 in words is "two trillion, six hundred eighty-six billion, six hundred seventy-four million, five hundred ninety-nine thousand, six hundred eighty-nine".