86536381 has 4 divisors (see below), whose sum is σ = 87579072. Its totient is φ = 85493692.

The previous prime is 86536367. The next prime is 86536397. The reversal of 86536381 is 18363568.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86536381 - 2¹¹ = 86534333 is a prime.

It is a super-2 number, since 2×86536381² = 14977090473154322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86536301) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 521221 + ... + 521386.

It is an arithmetic number, because the mean of its divisors is an integer number (21894768).

Almost surely, 2^86536381 is an apocalyptic number.

It is an amenable number.

86536381 is a deficient number, since it is larger than the sum of its proper divisors (1042691).

86536381 is a wasteful number, since it uses less digits than its factorization.

86536381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042690.

The product of its digits is 103680, while the sum is 40.

The square root of 86536381 is about 9302.4932679363. The cubic root of 86536381 is about 442.3162649161.

The spelling of 86536381 in words is "eighty-six million, five hundred thirty-six thousand, three hundred eighty-one".