684241243 has 12 divisors (see below), whose sum is σ = 837847560. Its totient is φ = 555623712.

The previous prime is 684241223. The next prime is 684241247. The reversal of 684241243 is 342142486.

It is a de Polignac number, because none of the positive numbers 2^k-684241243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 684241199 and 684241208.

It is not an unprimeable number, because it can be changed into a prime (684241247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 366546 + ... + 368407.

It is an arithmetic number, because the mean of its divisors is an integer number (69820630).

Almost surely, 2^684241243 is an apocalyptic number.

684241243 is a deficient number, since it is larger than the sum of its proper divisors (153606317).

684241243 is a wasteful number, since it uses less digits than its factorization.

684241243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734986 (or 734979 counting only the distinct ones).

The product of its digits is 36864, while the sum is 34.

The square root of 684241243 is about 26158.0053329760. The cubic root of 684241243 is about 881.1903841233.

The spelling of 684241243 in words is "six hundred eighty-four million, two hundred forty-one thousand, two hundred forty-three".