2688785287 has 2 divisors, whose sum is σ = 2688785288. Its totient is φ = 2688785286.

The previous prime is 2688785273. The next prime is 2688785299. The reversal of 2688785287 is 7825878862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2688785287 - 2⁷ = 2688785159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2688785237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344392643 + 1344392644.

It is an arithmetic number, because the mean of its divisors is an integer number (1344392644).

Almost surely, 2^2688785287 is an apocalyptic number.

2688785287 is a deficient number, since it is larger than the sum of its proper divisors (1).

2688785287 is an equidigital number, since it uses as much as digits as its factorization.

2688785287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24084480, while the sum is 61.

The square root of 2688785287 is about 51853.4983101430. The cubic root of 2688785287 is about 1390.5460454922.

The spelling of 2688785287 in words is "two billion, six hundred eighty-eight million, seven hundred eighty-five thousand, two hundred eighty-seven".