684516487523 has 16 divisors (see below), whose sum is σ = 754523168256. Its totient is φ = 615814587840.

The previous prime is 684516487489. The next prime is 684516487537. The reversal of 684516487523 is 325784615486.

684516487523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 684516487523 - 2¹⁰ = 684516486499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (684516487553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1412786 + ... + 1834392.

It is an arithmetic number, because the mean of its divisors is an integer number (47157698016).

Almost surely, 2^684516487523 is an apocalyptic number.

684516487523 is a deficient number, since it is larger than the sum of its proper divisors (70006680733).

684516487523 is a wasteful number, since it uses less digits than its factorization.

684516487523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423154.

The product of its digits is 38707200, while the sum is 59.

The spelling of 684516487523 in words is "six hundred eighty-four billion, five hundred sixteen million, four hundred eighty-seven thousand, five hundred twenty-three".