684930347 has 8 divisors (see below), whose sum is σ = 713943696. Its totient is φ = 656469792.

The previous prime is 684930343. The next prime is 684930353. The reversal of 684930347 is 743039486.

It is a happy number.

684930347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 684930347 - 2² = 684930343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 684930298 and 684930307.

It is not an unprimeable number, because it can be changed into a prime (684930341) 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, 135668 + ... + 140625.

It is an arithmetic number, because the mean of its divisors is an integer number (89242962).

Almost surely, 2^684930347 is an apocalyptic number.

684930347 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

684930347 is a deficient number, since it is larger than the sum of its proper divisors (29013349).

684930347 is a wasteful number, since it uses less digits than its factorization.

684930347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276397.

The product of its (nonzero) digits is 435456, while the sum is 44.

The square root of 684930347 is about 26171.1739706113. The cubic root of 684930347 is about 881.4861024778.

The spelling of 684930347 in words is "six hundred eighty-four million, nine hundred thirty thousand, three hundred forty-seven".