689724145518 has 32 divisors (see below), whose sum is σ = 1408551862176. Its totient is φ = 225103431168.

The previous prime is 689724145507. The next prime is 689724145547. The reversal of 689724145518 is 815541427986.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5687121 + ... + 5807132.

It is an arithmetic number, because the mean of its divisors is an integer number (44017245693).

Almost surely, 2^689724145518 is an apocalyptic number.

689724145518 is an abundant number, since it is smaller than the sum of its proper divisors (718827716658).

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

689724145518 is a wasteful number, since it uses less digits than its factorization.

689724145518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11494468.

The product of its digits is 19353600, while the sum is 60.

The spelling of 689724145518 in words is "six hundred eighty-nine billion, seven hundred twenty-four million, one hundred forty-five thousand, five hundred eighteen".