86566940 has 24 divisors (see below), whose sum is σ = 189695520. Its totient is φ = 33121088.

The previous prime is 86566933. The next prime is 86566957. The reversal of 86566940 is 4966568.

It is a junction number, because it is equal to n+sod(n) for n = 86566891 and 86566900.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93635 + ... + 94554.

It is an arithmetic number, because the mean of its divisors is an integer number (7903980).

Almost surely, 2^86566940 is an apocalyptic number.

It is an amenable number.

86566940 is an abundant number, since it is smaller than the sum of its proper divisors (103128580).

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

86566940 is a wasteful number, since it uses less digits than its factorization.

86566940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188221 (or 188219 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 86566940 is about 9304.1356395960. The cubic root of 86566940 is about 442.3683245309.

The spelling of 86566940 in words is "eighty-six million, five hundred sixty-six thousand, nine hundred forty".