86165730 has 96 divisors (see below), whose sum is σ = 257572224. Its totient is φ = 19577088.

The previous prime is 86165713. The next prime is 86165731. The reversal of 86165730 is 3756168.

86165730 is a `hidden beast` number, since 8 + 616 + 5 + 7 + 30 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86165731) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 146497 + ... + 147083.

It is an arithmetic number, because the mean of its divisors is an integer number (2683044).

Almost surely, 2^86165730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86165730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128786112).

86165730 is an abundant number, since it is smaller than the sum of its proper divisors (171406494).

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

86165730 is a wasteful number, since it uses less digits than its factorization.

86165730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840 (or 837 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 86165730 is about 9282.5497574750. The cubic root of 86165730 is about 441.6838542419.

The spelling of 86165730 in words is "eighty-six million, one hundred sixty-five thousand, seven hundred thirty".