86381145 has 12 divisors (see below), whose sum is σ = 149727396. Its totient is φ = 46069920.

The previous prime is 86381107. The next prime is 86381147. The reversal of 86381145 is 54118368.

86381145 is a `hidden beast` number, since 8 + 638 + 1 + 14 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13995081 + 72386064 = 3741^2 + 8508^2 .

It is not a de Polignac number, because 86381145 - 2⁶ = 86381081 is a prime.

It is a super-2 number, since 2×86381145² = 14923404423022050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86381147) 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 11 ways as a sum of consecutive naturals, for example, 959746 + ... + 959835.

It is an arithmetic number, because the mean of its divisors is an integer number (12477283).

Almost surely, 2^86381145 is an apocalyptic number.

It is an amenable number.

86381145 is a deficient number, since it is larger than the sum of its proper divisors (63346251).

86381145 is a wasteful number, since it uses less digits than its factorization.

86381145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919592 (or 1919589 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 86381145 is about 9294.1457380439. The cubic root of 86381145 is about 442.0516189723.

The spelling of 86381145 in words is "eighty-six million, three hundred eighty-one thousand, one hundred forty-five".