86686844 has 12 divisors (see below), whose sum is σ = 151884600. Its totient is φ = 43291248.

The previous prime is 86686807. The next prime is 86686867. The reversal of 86686844 is 44868668.

It is a junction number, because it is equal to n+sod(n) for n = 86686792 and 86686801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9179 + ... + 16050.

It is an arithmetic number, because the mean of its divisors is an integer number (12657050).

Almost surely, 2^86686844 is an apocalyptic number.

It is an amenable number.

86686844 is a deficient number, since it is larger than the sum of its proper divisors (65197756).

86686844 is a wasteful number, since it uses less digits than its factorization.

86686844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26092 (or 26090 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 50.

The square root of 86686844 is about 9310.5769960835. The cubic root of 86686844 is about 442.5724719841.

The spelling of 86686844 in words is "eighty-six million, six hundred eighty-six thousand, eight hundred forty-four".