687387003 has 8 divisors (see below), whose sum is σ = 918193728. Its totient is φ = 457419144.

The previous prime is 687386989. The next prime is 687387007. The reversal of 687387003 is 300783786.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 687387003 - 2⁸ = 687386747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (687387007) 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 in 7 ways as a sum of consecutive naturals, for example, 207801 + ... + 211082.

It is an arithmetic number, because the mean of its divisors is an integer number (114774216).

Almost surely, 2^687387003 is an apocalyptic number.

687387003 is a deficient number, since it is larger than the sum of its proper divisors (230806725).

687387003 is a wasteful number, since it uses less digits than its factorization.

687387003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419433.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 687387003 is about 26218.0663474635. The cubic root of 687387003 is about 882.5387273917.

The spelling of 687387003 in words is "six hundred eighty-seven million, three hundred eighty-seven thousand, three".