687823265313 has 12 divisors (see below), whose sum is σ = 1016627669200. Its totient is φ = 447884916696.

The previous prime is 687823265293. The next prime is 687823265341. The reversal of 687823265313 is 313562328786.

It is a happy number.

687823265313 is a `hidden beast` number, since 6 + 8 + 7 + 82 + 3 + 26 + 531 + 3 = 666.

It is not a de Polignac number, because 687823265313 - 2⁶ = 687823265249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 687823265313.

It is not an unprimeable number, because it can be changed into a prime (687823265813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 888660163 + ... + 888660936.

Almost surely, 2^687823265313 is an apocalyptic number.

It is an amenable number.

687823265313 is a deficient number, since it is larger than the sum of its proper divisors (328804403887).

687823265313 is a wasteful number, since it uses less digits than its factorization.

687823265313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777321148 (or 1777321145 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The spelling of 687823265313 in words is "six hundred eighty-seven billion, eight hundred twenty-three million, two hundred sixty-five thousand, three hundred thirteen".