689842638873 has 24 divisors (see below), whose sum is σ = 1003922400000. Its totient is φ = 456442789824.

The previous prime is 689842638857. The next prime is 689842638883. The reversal of 689842638873 is 378836248986.

It is a happy number.

689842638873 is a `hidden beast` number, since 6 + 8 + 98 + 426 + 38 + 87 + 3 = 666.

It is not a de Polignac number, because 689842638873 - 2⁴ = 689842638857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (689842638803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6107808 + ... + 6219726.

It is an arithmetic number, because the mean of its divisors is an integer number (41830100000).

Almost surely, 2^689842638873 is an apocalyptic number.

It is an amenable number.

689842638873 is a deficient number, since it is larger than the sum of its proper divisors (314079761127).

689842638873 is a wasteful number, since it uses less digits than its factorization.

689842638873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117061 (or 117058 counting only the distinct ones).

The product of its digits is 668860416, while the sum is 72.

The spelling of 689842638873 in words is "six hundred eighty-nine billion, eight hundred forty-two million, six hundred thirty-eight thousand, eight hundred seventy-three".