686800154742 has 16 divisors (see below), whose sum is σ = 1479261871920. Its totient is φ = 211323124512.

The previous prime is 686800154687. The next prime is 686800154771. The reversal of 686800154742 is 247451008686.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4402565017 + ... + 4402565172.

It is an arithmetic number, because the mean of its divisors is an integer number (92453866995).

Almost surely, 2^686800154742 is an apocalyptic number.

686800154742 is an abundant number, since it is smaller than the sum of its proper divisors (792461717178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

686800154742 is a wasteful number, since it uses less digits than its factorization.

686800154742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8805130207.

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 686800154742 in words is "six hundred eighty-six billion, eight hundred million, one hundred fifty-four thousand, seven hundred forty-two".