687767331050 has 24 divisors (see below), whose sum is σ = 1279269377100. Its totient is φ = 275102170880.

The previous prime is 687767331049. The next prime is 687767331103. The reversal of 687767331050 is 50133767786.

It can be written as a sum of positive squares in 6 ways, for example, as 17230801 + 687750100249 = 4151^2 + 829307^2 .

It is a junction number, because it is equal to n+sod(n) for n = 687767330983 and 687767331001.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4863746 + ... + 5003154.

Almost surely, 2^687767331050 is an apocalyptic number.

687767331050 is a deficient number, since it is larger than the sum of its proper divisors (591502046050).

687767331050 is a wasteful number, since it uses less digits than its factorization.

687767331050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238090 (or 238085 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 53.

The spelling of 687767331050 in words is "six hundred eighty-seven billion, seven hundred sixty-seven million, three hundred thirty-one thousand, fifty".