684848345 has 16 divisors (see below), whose sum is σ = 858304512. Its totient is φ = 523596480.

The previous prime is 684848323. The next prime is 684848347. The reversal of 684848345 is 543848486.

It is a happy number.

It is not a de Polignac number, because 684848345 - 2⁸ = 684848089 is a prime.

It is a super-4 number, since 4×684848345⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 684848293 and 684848302.

It is not an unprimeable number, because it can be changed into a prime (684848347) 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, 189455 + ... + 193035.

It is an arithmetic number, because the mean of its divisors is an integer number (53644032).

Almost surely, 2^684848345 is an apocalyptic number.

It is an amenable number.

684848345 is a deficient number, since it is larger than the sum of its proper divisors (173456167).

684848345 is a wasteful number, since it uses less digits than its factorization.

684848345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5272.

The product of its digits is 2949120, while the sum is 50.

The square root of 684848345 is about 26169.6072763807. The cubic root of 684848345 is about 881.4509229842.

The spelling of 684848345 in words is "six hundred eighty-four million, eight hundred forty-eight thousand, three hundred forty-five".