684132347 has 2 divisors, whose sum is σ = 684132348. Its totient is φ = 684132346.

The previous prime is 684132313. The next prime is 684132419. The reversal of 684132347 is 743231486.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 684132347 - 2⁸ = 684132091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 684132347.

It is not a weakly prime, because it can be changed into another prime (684132307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342066173 + 342066174.

It is an arithmetic number, because the mean of its divisors is an integer number (342066174).

Almost surely, 2^684132347 is an apocalyptic number.

684132347 is a deficient number, since it is larger than the sum of its proper divisors (1).

684132347 is an equidigital number, since it uses as much as digits as its factorization.

684132347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 38.

The square root of 684132347 is about 26155.9237458745. The cubic root of 684132347 is about 881.1436349200.

The spelling of 684132347 in words is "six hundred eighty-four million, one hundred thirty-two thousand, three hundred forty-seven".