686444605334 has 8 divisors (see below), whose sum is σ = 1043771934360. Its totient is φ = 338520627216.

The previous prime is 686444605331. The next prime is 686444605339. The reversal of 686444605334 is 433506444686.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686444605331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2350837544 + ... + 2350837835.

It is an arithmetic number, because the mean of its divisors is an integer number (130471491795).

Almost surely, 2^686444605334 is an apocalyptic number.

686444605334 is a deficient number, since it is larger than the sum of its proper divisors (357327329026).

686444605334 is a wasteful number, since it uses less digits than its factorization.

686444605334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4701675454.

The product of its (nonzero) digits is 19906560, while the sum is 53.

The spelling of 686444605334 in words is "six hundred eighty-six billion, four hundred forty-four million, six hundred five thousand, three hundred thirty-four".