687635006 has 8 divisors (see below), whose sum is σ = 1092126240. Its totient is φ = 323592928.

The previous prime is 687634999. The next prime is 687635009. The reversal of 687635006 is 600536786.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687635009) 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, 10112246 + ... + 10112313.

It is an arithmetic number, because the mean of its divisors is an integer number (136515780).

Almost surely, 2^687635006 is an apocalyptic number.

687635006 is a deficient number, since it is larger than the sum of its proper divisors (404491234).

687635006 is a wasteful number, since it uses less digits than its factorization.

687635006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20224578.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 687635006 is about 26222.7955412843. The cubic root of 687635006 is about 882.6448519542.

The spelling of 687635006 in words is "six hundred eighty-seven million, six hundred thirty-five thousand, six".