686119809390 has 32 divisors (see below), whose sum is σ = 1671264973440. Its totient is φ = 180234456864.

The previous prime is 686119809373. The next prime is 686119809509. The reversal of 686119809390 is 93908911686.

It is a super-3 number, since 3×686119809390³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170674560 + ... + 170678579.

It is an arithmetic number, because the mean of its divisors is an integer number (52227030420).

Almost surely, 2^686119809390 is an apocalyptic number.

686119809390 is an abundant number, since it is smaller than the sum of its proper divisors (985145164050).

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

686119809390 is a wasteful number, since it uses less digits than its factorization.

686119809390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341353216.

The product of its (nonzero) digits is 5038848, while the sum is 60.

The spelling of 686119809390 in words is "six hundred eighty-six billion, one hundred nineteen million, eight hundred nine thousand, three hundred ninety".