687334868 has 12 divisors (see below), whose sum is σ = 1312184832. Its totient is φ = 312424920.

The previous prime is 687334867. The next prime is 687334873. The reversal of 687334868 is 868433786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687334867) 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, 7810580 + ... + 7810667.

It is an arithmetic number, because the mean of its divisors is an integer number (109348736).

Almost surely, 2^687334868 is an apocalyptic number.

It is an amenable number.

687334868 is a deficient number, since it is larger than the sum of its proper divisors (624849964).

687334868 is a wasteful number, since it uses less digits than its factorization.

687334868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15621262 (or 15621260 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 53.

The square root of 687334868 is about 26217.0720714576. The cubic root of 687334868 is about 882.5164147209.

The spelling of 687334868 in words is "six hundred eighty-seven million, three hundred thirty-four thousand, eight hundred sixty-eight".