86645140 has 24 divisors (see below), whose sum is σ = 189866880. Its totient is φ = 33151008.

The previous prime is 86645113. The next prime is 86645161. The reversal of 86645140 is 4154668.

It is a junction number, because it is equal to n+sod(n) for n = 86645096 and 86645105.

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, 93720 + ... + 94639.

It is an arithmetic number, because the mean of its divisors is an integer number (7911120).

Almost surely, 2^86645140 is an apocalyptic number.

It is an amenable number.

86645140 is an abundant number, since it is smaller than the sum of its proper divisors (103221740).

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

86645140 is a wasteful number, since it uses less digits than its factorization.

86645140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188391 (or 188389 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 86645140 is about 9308.3371232460. The cubic root of 86645140 is about 442.5014884987.

The spelling of 86645140 in words is "eighty-six million, six hundred forty-five thousand, one hundred forty".