684341005 has 8 divisors (see below), whose sum is σ = 834672024. Its totient is φ = 538497600.

The previous prime is 684340999. The next prime is 684341017. The reversal of 684341005 is 500143486.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 51868804 + 632472201 = 7202^2 + 25149^2 .

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

It is not a de Polignac number, because 684341005 - 2³ = 684340997 is a prime.

It is a super-2 number, since 2×684341005² = 936645222248820050, which contains 22 as substring.

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, 1121566 + ... + 1122175.

It is an arithmetic number, because the mean of its divisors is an integer number (104334003).

Almost surely, 2^684341005 is an apocalyptic number.

It is an amenable number.

684341005 is a deficient number, since it is larger than the sum of its proper divisors (150331019).

684341005 is a wasteful number, since it uses less digits than its factorization.

684341005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243807.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 684341005 is about 26159.9121749290. The cubic root of 684341005 is about 881.2332077346.

The spelling of 684341005 in words is "six hundred eighty-four million, three hundred forty-one thousand, five".