686041672426 has 32 divisors (see below), whose sum is σ = 1165517268480. Its totient is φ = 299997096000.

The previous prime is 686041672403. The next prime is 686041672427. The reversal of 686041672426 is 624276140686.

It is not an unprimeable number, because it can be changed into a prime (686041672427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1764250 + ... + 2117701.

It is an arithmetic number, because the mean of its divisors is an integer number (36422414640).

Almost surely, 2^686041672426 is an apocalyptic number.

686041672426 is a deficient number, since it is larger than the sum of its proper divisors (479475596054).

686041672426 is a wasteful number, since it uses less digits than its factorization.

686041672426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3882270.

The product of its (nonzero) digits is 4644864, while the sum is 52.

The spelling of 686041672426 in words is "six hundred eighty-six billion, forty-one million, six hundred seventy-two thousand, four hundred twenty-six".