689728345180 has 24 divisors (see below), whose sum is σ = 1655348028768. Its totient is φ = 236478289728.

The previous prime is 689728345127. The next prime is 689728345219. The reversal of 689728345180 is 81543827986.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2463315379 + ... + 2463315658.

It is an arithmetic number, because the mean of its divisors is an integer number (68972834532).

It is a 1-persistent number, because it is pandigital, but 2⋅689728345180 = 1379456690360 is not.

Almost surely, 2^689728345180 is an apocalyptic number.

It is an amenable number.

689728345180 is an abundant number, since it is smaller than the sum of its proper divisors (965619683588).

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

689728345180 is a wasteful number, since it uses less digits than its factorization.

689728345180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4926631053 (or 4926631051 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 61.

The spelling of 689728345180 in words is "six hundred eighty-nine billion, seven hundred twenty-eight million, three hundred forty-five thousand, one hundred eighty".