687067471 has 2 divisors, whose sum is σ = 687067472. Its totient is φ = 687067470.

The previous prime is 687067429. The next prime is 687067481. The reversal of 687067471 is 174760786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 687067471 - 2⁷ = 687067343 is a prime.

It is a super-3 number, since 3×687067471³ (a number of 27 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687067411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343533735 + 343533736.

It is an arithmetic number, because the mean of its divisors is an integer number (343533736).

Almost surely, 2^687067471 is an apocalyptic number.

687067471 is a deficient number, since it is larger than the sum of its proper divisors (1).

687067471 is an equidigital number, since it uses as much as digits as its factorization.

687067471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 687067471 is about 26211.9719021671. The cubic root of 687067471 is about 882.4019567562.

The spelling of 687067471 in words is "six hundred eighty-seven million, sixty-seven thousand, four hundred seventy-one".