684680245135 has 16 divisors (see below), whose sum is σ = 823137859296. Its totient is φ = 546730633728.

The previous prime is 684680245133. The next prime is 684680245159. The reversal of 684680245135 is 531542086486.

It is a cyclic number.

It is not a de Polignac number, because 684680245135 - 2¹ = 684680245133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684680245133) 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, 6848427 + ... + 6947683.

It is an arithmetic number, because the mean of its divisors is an integer number (51446116206).

Almost surely, 2^684680245135 is an apocalyptic number.

684680245135 is a deficient number, since it is larger than the sum of its proper divisors (138457614161).

684680245135 is a wasteful number, since it uses less digits than its factorization.

684680245135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101802.

The product of its (nonzero) digits is 5529600, while the sum is 52.

The spelling of 684680245135 in words is "six hundred eighty-four billion, six hundred eighty million, two hundred forty-five thousand, one hundred thirty-five".