687480847 has 2 divisors, whose sum is σ = 687480848. Its totient is φ = 687480846.

The previous prime is 687480817. The next prime is 687480851. The reversal of 687480847 is 748084786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 687480847 - 2⁷ = 687480719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 687480794 and 687480803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687480817) 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, 343740423 + 343740424.

It is an arithmetic number, because the mean of its divisors is an integer number (343740424).

Almost surely, 2^687480847 is an apocalyptic number.

687480847 is a deficient number, since it is larger than the sum of its proper divisors (1).

687480847 is an equidigital number, since it uses as much as digits as its factorization.

687480847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2408448, while the sum is 52.

The square root of 687480847 is about 26219.8559683306. The cubic root of 687480847 is about 882.5788877843.

The spelling of 687480847 in words is "six hundred eighty-seven million, four hundred eighty thousand, eight hundred forty-seven".