684012835 has 8 divisors (see below), whose sum is σ = 895435056. Its totient is φ = 497463840.

The previous prime is 684012781. The next prime is 684012839. The reversal of 684012835 is 538210486.

It is a happy number.

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

It is not a de Polignac number, because 684012835 - 2¹⁵ = 683980067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 684012794 and 684012803.

It is not an unprimeable number, because it can be changed into a prime (684012839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6218244 + ... + 6218353.

It is an arithmetic number, because the mean of its divisors is an integer number (111929382).

Almost surely, 2^684012835 is an apocalyptic number.

684012835 is a deficient number, since it is larger than the sum of its proper divisors (211422221).

684012835 is a wasteful number, since it uses less digits than its factorization.

684012835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12436613.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 684012835 is about 26153.6390393383. The cubic root of 684012835 is about 881.0923225429.

The spelling of 684012835 in words is "six hundred eighty-four million, twelve thousand, eight hundred thirty-five".