86549540 has 96 divisors (see below), whose sum is σ = 232049664. Its totient is φ = 26328960.

The previous prime is 86549537. The next prime is 86549581. The reversal of 86549540 is 4594568.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65567 + ... + 66873.

It is an arithmetic number, because the mean of its divisors is an integer number (2417184).

Almost surely, 2^86549540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86549540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116024832).

86549540 is an abundant number, since it is smaller than the sum of its proper divisors (145500124).

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

86549540 is a wasteful number, since it uses less digits than its factorization.

86549540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377 (or 1375 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 86549540 is about 9303.2005245507. The cubic root of 86549540 is about 442.3386837903.

It can be divided in two parts, 865 and 49540, that added together give a palindrome (50405).

The spelling of 86549540 in words is "eighty-six million, five hundred forty-nine thousand, five hundred forty".