686430843 has 8 divisors (see below), whose sum is σ = 1045989888. Its totient is φ = 392246184.

The previous prime is 686430827. The next prime is 686430851. The reversal of 686430843 is 348034686.

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

It is not a de Polignac number, because 686430843 - 2⁴ = 686430827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 686430795 and 686430804.

It is not an unprimeable number, because it can be changed into a prime (686430853) 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, 16343571 + ... + 16343612.

It is an arithmetic number, because the mean of its divisors is an integer number (130748736).

Almost surely, 2^686430843 is an apocalyptic number.

686430843 is a deficient number, since it is larger than the sum of its proper divisors (359559045).

686430843 is a wasteful number, since it uses less digits than its factorization.

686430843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32687193.

The product of its (nonzero) digits is 331776, while the sum is 42.

The square root of 686430843 is about 26199.8252475088. The cubic root of 686430843 is about 882.1293317166.

The spelling of 686430843 in words is "six hundred eighty-six million, four hundred thirty thousand, eight hundred forty-three".