687374899 has 2 divisors, whose sum is σ = 687374900. Its totient is φ = 687374898.

The previous prime is 687374887. The next prime is 687374921. The reversal of 687374899 is 998473786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 687374899 - 2¹⁹ = 686850611 is a prime.

It is not a weakly prime, because it can be changed into another prime (687374869) 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, 343687449 + 343687450.

It is an arithmetic number, because the mean of its divisors is an integer number (343687450).

Almost surely, 2^687374899 is an apocalyptic number.

687374899 is a deficient number, since it is larger than the sum of its proper divisors (1).

687374899 is an equidigital number, since it uses as much as digits as its factorization.

687374899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18289152, while the sum is 61.

The square root of 687374899 is about 26217.8355132532. The cubic root of 687374899 is about 882.5335472378.

The spelling of 687374899 in words is "six hundred eighty-seven million, three hundred seventy-four thousand, eight hundred ninety-nine".