2686894577 has 2 divisors, whose sum is σ = 2686894578. Its totient is φ = 2686894576.

The previous prime is 2686894571. The next prime is 2686894579. The reversal of 2686894577 is 7754986862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1616361616 + 1070532961 = 40204^2 + 32719^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2686894577 is a prime.

Together with 2686894579, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2686894571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1343447288 + 1343447289.

It is an arithmetic number, because the mean of its divisors is an integer number (1343447289).

Almost surely, 2^2686894577 is an apocalyptic number.

It is an amenable number.

2686894577 is a deficient number, since it is larger than the sum of its proper divisors (1).

2686894577 is an equidigital number, since it uses as much as digits as its factorization.

2686894577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40642560, while the sum is 62.

The square root of 2686894577 is about 51835.2638365042. The cubic root of 2686894577 is about 1390.2200326245.

The spelling of 2686894577 in words is "two billion, six hundred eighty-six million, eight hundred ninety-four thousand, five hundred seventy-seven".