86688286866 has 48 divisors (see below), whose sum is σ = 199153375200.
Its totient is φ = 27175414464.
The previous prime is 86688286849. The next prime is 86688286907. The reversal of 86688286866 is 66868288668.
It is a junction number, because it is equal to n+sod(n) for n = 86688286794 and 86688286803.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 878236 + ... + 971943.
It is an arithmetic number, because the mean of its divisors is an integer number (4149028650).
Almost surely, 286688286866 is an apocalyptic number.
86688286866 is an abundant number, since it is smaller than the sum of its proper divisors (112465088334).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
86688286866 is a wasteful number, since it uses less digits than its factorization.
86688286866 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1850343 (or 1850340 counting only the distinct ones).
The product of its digits is 509607936, while the sum is 72.
The spelling of 86688286866 in words is "eighty-six billion, six hundred eighty-eight million, two hundred eighty-six thousand, eight hundred sixty-six".