687457363 has 2 divisors, whose sum is σ = 687457364. Its totient is φ = 687457362.

The previous prime is 687457349. The next prime is 687457387. The reversal of 687457363 is 363754786.

It is a happy number.

687457363 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 687457363 - 2¹⁷ = 687326291 is a prime.

It is not a weakly prime, because it can be changed into another prime (687458363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343728681 + 343728682.

It is an arithmetic number, because the mean of its divisors is an integer number (343728682).

Almost surely, 2^687457363 is an apocalyptic number.

687457363 is a deficient number, since it is larger than the sum of its proper divisors (1).

687457363 is an equidigital number, since it uses as much as digits as its factorization.

687457363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 49.

The square root of 687457363 is about 26219.4081359591. The cubic root of 687457363 is about 882.5688381862.

The spelling of 687457363 in words is "six hundred eighty-seven million, four hundred fifty-seven thousand, three hundred sixty-three".