684104975 has 24 divisors (see below), whose sum is σ = 911965440. Its totient is φ = 507431520.

The previous prime is 684104957. The next prime is 684104977. The reversal of 684104975 is 579401486.

684104975 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 684104975 - 2⁸ = 684104719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684104977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7004 + ... + 37646.

It is an arithmetic number, because the mean of its divisors is an integer number (37998560).

Almost surely, 2^684104975 is an apocalyptic number.

684104975 is a deficient number, since it is larger than the sum of its proper divisors (227860465).

684104975 is a wasteful number, since it uses less digits than its factorization.

684104975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30719 (or 30714 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 684104975 is about 26155.4004939706. The cubic root of 684104975 is about 881.1318833023.

The spelling of 684104975 in words is "six hundred eighty-four million, one hundred four thousand, nine hundred seventy-five".