684104605 has 8 divisors (see below), whose sum is σ = 822175200. Its totient is φ = 546450576.

The previous prime is 684104593. The next prime is 684104609. The reversal of 684104605 is 506401486.

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

It is a cyclic number.

It is not a de Polignac number, because 684104605 - 2²⁷ = 549886877 is a prime.

It is a super-2 number, since 2×684104605² = 935998221164412050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684104609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100515 + ... + 107104.

It is an arithmetic number, because the mean of its divisors is an integer number (102771900).

Almost surely, 2^684104605 is an apocalyptic number.

It is an amenable number.

684104605 is a deficient number, since it is larger than the sum of its proper divisors (138070595).

684104605 is a wasteful number, since it uses less digits than its factorization.

684104605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208283.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 684104605 is about 26155.3934208606. The cubic root of 684104605 is about 881.1317244481.

The spelling of 684104605 in words is "six hundred eighty-four million, one hundred four thousand, six hundred five".