687354119 has 2 divisors, whose sum is σ = 687354120. Its totient is φ = 687354118.

The previous prime is 687354077. The next prime is 687354121. The reversal of 687354119 is 911453786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 687354119 - 2¹⁶ = 687288583 is a prime.

It is a super-2 number, since 2×687354119² = 944911369812532322, which contains 22 as substring.

Together with 687354121, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 687354119.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687354169) 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, 343677059 + 343677060.

It is an arithmetic number, because the mean of its divisors is an integer number (343677060).

Almost surely, 2^687354119 is an apocalyptic number.

687354119 is a deficient number, since it is larger than the sum of its proper divisors (1).

687354119 is an equidigital number, since it uses as much as digits as its factorization.

687354119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 44.

The square root of 687354119 is about 26217.4392151484. The cubic root of 687354119 is about 882.5246538707.

The spelling of 687354119 in words is "six hundred eighty-seven million, three hundred fifty-four thousand, one hundred nineteen".