689041948854588 has 48 divisors (see below), whose sum is σ = 1842027354633984. Its totient is φ = 196378182777600.

The previous prime is 689041948854541. The next prime is 689041948854661. The reversal of 689041948854588 is 885458849140986.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10227996670 + ... + 10228064037.

It is an arithmetic number, because the mean of its divisors is an integer number (38375569888208).

Almost surely, 2^{689041948854588} is an apocalyptic number.

It is an amenable number.

689041948854588 is an abundant number, since it is smaller than the sum of its proper divisors (1152985405779396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689041948854588 is a wasteful number, since it uses less digits than its factorization.

689041948854588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20456061122 (or 20456061120 counting only the distinct ones).

The product of its (nonzero) digits is 25480396800, while the sum is 87.

The spelling of 689041948854588 in words is "six hundred eighty-nine trillion, forty-one billion, nine hundred forty-eight million, eight hundred fifty-four thousand, five hundred eighty-eight".