687884423 has 8 divisors (see below), whose sum is σ = 698162976. Its totient is φ = 677622400.

The previous prime is 687884419. The next prime is 687884443. The reversal of 687884423 is 324488786.

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

It is a cyclic number.

It is not a de Polignac number, because 687884423 - 2² = 687884419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687884443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98363 + ... + 105123.

It is an arithmetic number, because the mean of its divisors is an integer number (87270372).

Almost surely, 2^687884423 is an apocalyptic number.

687884423 is a deficient number, since it is larger than the sum of its proper divisors (10278553).

687884423 is a wasteful number, since it uses less digits than its factorization.

687884423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8265.

The product of its digits is 2064384, while the sum is 50.

The square root of 687884423 is about 26227.5508387649. The cubic root of 687884423 is about 882.7515558585.

The spelling of 687884423 in words is "six hundred eighty-seven million, eight hundred eighty-four thousand, four hundred twenty-three".