689491845323500 has 96 divisors (see below), whose sum is σ = 1506971527326720. Its totient is φ = 275591441432000.

The previous prime is 689491845323423. The next prime is 689491845323507. The reversal of 689491845323500 is 5323548194986.

It is not an unprimeable number, because it can be changed into a prime (689491845323507) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 3716463741 + ... + 3716649259.

It is an arithmetic number, because the mean of its divisors is an integer number (15697620076320).

Almost surely, 2^{689491845323500} is an apocalyptic number.

It is an amenable number.

689491845323500 is an abundant number, since it is smaller than the sum of its proper divisors (817479682003220).

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

689491845323500 is a wasteful number, since it uses less digits than its factorization.

689491845323500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191032 (or 191020 counting only the distinct ones).

The product of its (nonzero) digits is 223948800, while the sum is 67.

The spelling of 689491845323500 in words is "six hundred eighty-nine trillion, four hundred ninety-one billion, eight hundred forty-five million, three hundred twenty-three thousand, five hundred".