687337667 has 2 divisors, whose sum is σ = 687337668. Its totient is φ = 687337666.

The previous prime is 687337663. The next prime is 687337687. The reversal of 687337667 is 766733786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 687337667 - 2² = 687337663 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (687337661) 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, 343668833 + 343668834.

It is an arithmetic number, because the mean of its divisors is an integer number (343668834).

Almost surely, 2^687337667 is an apocalyptic number.

687337667 is a deficient number, since it is larger than the sum of its proper divisors (1).

687337667 is an equidigital number, since it uses as much as digits as its factorization.

687337667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5334336, while the sum is 53.

The square root of 687337667 is about 26217.1254526502. The cubic root of 687337667 is about 882.5176126620.

The spelling of 687337667 in words is "six hundred eighty-seven million, three hundred thirty-seven thousand, six hundred sixty-seven".