86681540 has 24 divisors (see below), whose sum is σ = 198580032. Its totient is φ = 31520480.

The previous prime is 86681531. The next prime is 86681563. The reversal of 86681540 is 4518668.

It is a junction number, because it is equal to n+sod(n) for n = 86681494 and 86681503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196784 + ... + 197223.

It is an arithmetic number, because the mean of its divisors is an integer number (8274168).

Almost surely, 2^86681540 is an apocalyptic number.

It is an amenable number.

86681540 is an abundant number, since it is smaller than the sum of its proper divisors (111898492).

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

86681540 is a wasteful number, since it uses less digits than its factorization.

86681540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394027 (or 394025 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 86681540 is about 9310.2921543848. The cubic root of 86681540 is about 442.5634454231.

The spelling of 86681540 in words is "eighty-six million, six hundred eighty-one thousand, five hundred forty".