684575005 has 8 divisors (see below), whose sum is σ = 821640024. Its totient is φ = 547560000.

The previous prime is 684574993. The next prime is 684575039. The reversal of 684575005 is 500575486.

684575005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 537219684 + 147355321 = 23178^2 + 12139^2 .

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

It is not a de Polignac number, because 684575005 - 2⁵ = 684574973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32055 + ... + 48955.

It is an arithmetic number, because the mean of its divisors is an integer number (102705003).

Almost surely, 2^684575005 is an apocalyptic number.

It is an amenable number.

684575005 is a deficient number, since it is larger than the sum of its proper divisors (137065019).

684575005 is a wasteful number, since it uses less digits than its factorization.

684575005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25007.

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 684575005 is about 26164.3842847486. The cubic root of 684575005 is about 881.3336377202. Note that the first 3 decimals are identical.

The spelling of 684575005 in words is "six hundred eighty-four million, five hundred seventy-five thousand, five".