684013111 has 8 divisors (see below), whose sum is σ = 709581600. Its totient is φ = 658576800.

The previous prime is 684013081. The next prime is 684013151. The reversal of 684013111 is 111310486.

It is a happy number.

684013111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 684013111 - 2²³ = 675624503 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 (684013151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22440 + ... + 43261.

It is an arithmetic number, because the mean of its divisors is an integer number (88697700).

Almost surely, 2^684013111 is an apocalyptic number.

684013111 is a deficient number, since it is larger than the sum of its proper divisors (25568489).

684013111 is a wasteful number, since it uses less digits than its factorization.

684013111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66089.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 684013111 is about 26153.6443158501. The cubic root of 684013111 is about 881.0924410502.

Adding to 684013111 its reverse (111310486), we get a palindrome (795323597).

The spelling of 684013111 in words is "six hundred eighty-four million, thirteen thousand, one hundred eleven".