687492419 has 2 divisors, whose sum is σ = 687492420. Its totient is φ = 687492418.

The previous prime is 687492401. The next prime is 687492437. The reversal of 687492419 is 914294786.

687492419 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (687492401) and next prime (687492437).

It is a cyclic number.

It is not a de Polignac number, because 687492419 - 2⁸ = 687492163 is a prime.

It is a super-2 number, since 2×687492419² = 945291652364943122, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (687492499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343746209 + 343746210.

It is an arithmetic number, because the mean of its divisors is an integer number (343746210).

Almost surely, 2^687492419 is an apocalyptic number.

687492419 is a deficient number, since it is larger than the sum of its proper divisors (1).

687492419 is an equidigital number, since it uses as much as digits as its factorization.

687492419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 50.

The square root of 687492419 is about 26220.0766398575. The cubic root of 687492419 is about 882.5838397504.

The spelling of 687492419 in words is "six hundred eighty-seven million, four hundred ninety-two thousand, four hundred nineteen".