689716548099 has 8 divisors (see below), whose sum is σ = 1021802293520. Its totient is φ = 459811032048.

The previous prime is 689716548041. The next prime is 689716548121. The reversal of 689716548099 is 990845617986.

689716548099 is a `hidden beast` number, since 6 + 8 + 9 + 71 + 6 + 548 + 0 + 9 + 9 = 666.

It is not a de Polignac number, because 689716548099 - 2⁸ = 689716547843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689716540099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12772528642 + ... + 12772528695.

It is an arithmetic number, because the mean of its divisors is an integer number (127725286690).

Almost surely, 2^689716548099 is an apocalyptic number.

689716548099 is a deficient number, since it is larger than the sum of its proper divisors (332085745421).

689716548099 is a wasteful number, since it uses less digits than its factorization.

689716548099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25545057346 (or 25545057340 counting only the distinct ones).

The product of its (nonzero) digits is 235146240, while the sum is 72.

The spelling of 689716548099 in words is "six hundred eighty-nine billion, seven hundred sixteen million, five hundred forty-eight thousand, ninety-nine".