684082097 has 4 divisors (see below), whose sum is σ = 685093236. Its totient is φ = 683070960.

The previous prime is 684082081. The next prime is 684082117. The reversal of 684082097 is 790280486.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 335475856 + 348606241 = 18316^2 + 18671^2 .

It is a cyclic number.

It is not a de Polignac number, because 684082097 - 2⁴ = 684082081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (684082027) 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 3 ways as a sum of consecutive naturals, for example, 504554 + ... + 505907.

It is an arithmetic number, because the mean of its divisors is an integer number (171273309).

Almost surely, 2^684082097 is an apocalyptic number.

It is an amenable number.

684082097 is a deficient number, since it is larger than the sum of its proper divisors (1011139).

684082097 is a wasteful number, since it uses less digits than its factorization.

684082097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011138.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 684082097 is about 26154.9631427766. The cubic root of 684082097 is about 881.1220608527.

The spelling of 684082097 in words is "six hundred eighty-four million, eighty-two thousand, ninety-seven".