687654603 has 20 divisors (see below), whose sum is σ = 1049099040. Its totient is φ = 448679952.

The previous prime is 687654599. The next prime is 687654637. The reversal of 687654603 is 306456786.

It is not a de Polignac number, because 687654603 - 2² = 687654599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (687654683) 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 19 ways as a sum of consecutive naturals, for example, 86508 + ... + 94121.

It is an arithmetic number, because the mean of its divisors is an integer number (52454952).

Almost surely, 2^687654603 is an apocalyptic number.

687654603 is a deficient number, since it is larger than the sum of its proper divisors (361444437).

687654603 is a wasteful number, since it uses less digits than its factorization.

687654603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180688 (or 180679 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 687654603 is about 26223.1692020625. The cubic root of 687654603 is about 882.6532367450.

The spelling of 687654603 in words is "six hundred eighty-seven million, six hundred fifty-four thousand, six hundred three".