687902339053 has 2 divisors, whose sum is σ = 687902339054. Its totient is φ = 687902339052.

The previous prime is 687902339011. The next prime is 687902339083. The reversal of 687902339053 is 350933209786.

It is a happy number.

687902339053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 460447744969 + 227454594084 = 678563^2 + 476922^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-687902339053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 687902338985 and 687902339003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687902339083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343951169526 + 343951169527.

It is an arithmetic number, because the mean of its divisors is an integer number (343951169527).

Almost surely, 2^687902339053 is an apocalyptic number.

It is an amenable number.

687902339053 is a deficient number, since it is larger than the sum of its proper divisors (1).

687902339053 is an equidigital number, since it uses as much as digits as its factorization.

687902339053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7348320, while the sum is 55.

The spelling of 687902339053 in words is "six hundred eighty-seven billion, nine hundred two million, three hundred thirty-nine thousand, fifty-three".