686383713850 has 24 divisors (see below), whose sum is σ = 1306363798080. Its totient is φ = 268168519920.

The previous prime is 686383713833. The next prime is 686383713853. The reversal of 686383713850 is 58317383686.

It is a super-2 number, since 2×686383713850² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (686383713853) 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 11 ways as a sum of consecutive naturals, for example, 159621970 + ... + 159626269.

It is an arithmetic number, because the mean of its divisors is an integer number (54431824920).

Almost surely, 2^686383713850 is an apocalyptic number.

686383713850 is a deficient number, since it is larger than the sum of its proper divisors (619980084230).

686383713850 is a wasteful number, since it uses less digits than its factorization.

686383713850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319248294 (or 319248289 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 686383713850 in words is "six hundred eighty-six billion, three hundred eighty-three million, seven hundred thirteen thousand, eight hundred fifty".