684411113 has 2 divisors, whose sum is σ = 684411114. Its totient is φ = 684411112.

The previous prime is 684411059. The next prime is 684411127. The reversal of 684411113 is 311114486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 484132009 + 200279104 = 22003^2 + 14152^2 .

It is a cyclic number.

It is not a de Polignac number, because 684411113 - 2²⁸ = 415975657 is a prime.

It is not a weakly prime, because it can be changed into another prime (684411173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342205556 + 342205557.

It is an arithmetic number, because the mean of its divisors is an integer number (342205557).

Almost surely, 2^684411113 is an apocalyptic number.

It is an amenable number.

684411113 is a deficient number, since it is larger than the sum of its proper divisors (1).

684411113 is an equidigital number, since it uses as much as digits as its factorization.

684411113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 29.

The square root of 684411113 is about 26161.2521298198. The cubic root of 684411113 is about 881.2632996467.

Adding to 684411113 its reverse (311114486), we get a palindrome (995525599).

The spelling of 684411113 in words is "six hundred eighty-four million, four hundred eleven thousand, one hundred thirteen".