687096817099 has 16 divisors (see below), whose sum is σ = 856707296256. Its totient is φ = 535358174400.

The previous prime is 687096817063. The next prime is 687096817103. The reversal of 687096817099 is 990718690786.

It is not a de Polignac number, because 687096817099 - 2¹³ = 687096808907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (687096811099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 658519 + ... + 1344559.

It is an arithmetic number, because the mean of its divisors is an integer number (53544206016).

Almost surely, 2^687096817099 is an apocalyptic number.

687096817099 is a deficient number, since it is larger than the sum of its proper divisors (169610479157).

687096817099 is a wasteful number, since it uses less digits than its factorization.

687096817099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699066.

The product of its (nonzero) digits is 82301184, while the sum is 70.

The spelling of 687096817099 in words is "six hundred eighty-seven billion, ninety-six million, eight hundred seventeen thousand, ninety-nine".