687016423 has 2 divisors, whose sum is σ = 687016424. Its totient is φ = 687016422.

The previous prime is 687016403. The next prime is 687016453. The reversal of 687016423 is 324610786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 687016423 - 2¹⁷ = 686885351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687016403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343508211 + 343508212.

It is an arithmetic number, because the mean of its divisors is an integer number (343508212).

Almost surely, 2^687016423 is an apocalyptic number.

687016423 is a deficient number, since it is larger than the sum of its proper divisors (1).

687016423 is an equidigital number, since it uses as much as digits as its factorization.

687016423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 687016423 is about 26210.9981305558. The cubic root of 687016423 is about 882.3801025363.

The spelling of 687016423 in words is "six hundred eighty-seven million, sixteen thousand, four hundred twenty-three".