687568803 has 4 divisors (see below), whose sum is σ = 916758408. Its totient is φ = 458379200.

The previous prime is 687568799. The next prime is 687568829. The reversal of 687568803 is 308865786.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 687568803 - 2² = 687568799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (687568853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114594798 + ... + 114594803.

It is an arithmetic number, because the mean of its divisors is an integer number (229189602).

Almost surely, 2^687568803 is an apocalyptic number.

687568803 is a deficient number, since it is larger than the sum of its proper divisors (229189605).

687568803 is a wasteful number, since it uses less digits than its factorization.

687568803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229189604.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The square root of 687568803 is about 26221.5331931602. The cubic root of 687568803 is about 882.6165250987.

The spelling of 687568803 in words is "six hundred eighty-seven million, five hundred sixty-eight thousand, eight hundred three".