687465937 has 2 divisors, whose sum is σ = 687465938. Its totient is φ = 687465936.

The previous prime is 687465917. The next prime is 687465959. The reversal of 687465937 is 739564786.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 399960001 + 287505936 = 19999^2 + 16956^2 .

It is a cyclic number.

It is not a de Polignac number, because 687465937 - 2¹⁹ = 686941649 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (687465917) 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, 343732968 + 343732969.

It is an arithmetic number, because the mean of its divisors is an integer number (343732969).

Almost surely, 2^687465937 is an apocalyptic number.

It is an amenable number.

687465937 is a deficient number, since it is larger than the sum of its proper divisors (1).

687465937 is an equidigital number, since it uses as much as digits as its factorization.

687465937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 55.

The square root of 687465937 is about 26219.5716402843. The cubic root of 687465937 is about 882.5725073174.

The spelling of 687465937 in words is "six hundred eighty-seven million, four hundred sixty-five thousand, nine hundred thirty-seven".