687227563 has 4 divisors (see below), whose sum is σ = 749702808. Its totient is φ = 624752320.

The previous prime is 687227543. The next prime is 687227573. The reversal of 687227563 is 365722786.

687227563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-687227563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (687227543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31237606 + ... + 31237627.

It is an arithmetic number, because the mean of its divisors is an integer number (187425702).

Almost surely, 2^687227563 is an apocalyptic number.

687227563 is a deficient number, since it is larger than the sum of its proper divisors (62475245).

687227563 is a wasteful number, since it uses less digits than its factorization.

687227563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62475244.

The product of its digits is 846720, while the sum is 46.

The square root of 687227563 is about 26215.0255197282. The cubic root of 687227563 is about 882.4704869125.

The spelling of 687227563 in words is "six hundred eighty-seven million, two hundred twenty-seven thousand, five hundred sixty-three".