86817541 has 4 divisors (see below), whose sum is σ = 88935084. Its totient is φ = 84700000.

The previous prime is 86817491. The next prime is 86817547. The reversal of 86817541 is 14571868.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46444225 + 40373316 = 6815^2 + 6354^2 .

It is a cyclic number.

It is not a de Polignac number, because 86817541 - 2¹¹ = 86815493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86817494 and 86817503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86817547) 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, 1058710 + ... + 1058791.

It is an arithmetic number, because the mean of its divisors is an integer number (22233771).

Almost surely, 2^86817541 is an apocalyptic number.

It is an amenable number.

86817541 is a deficient number, since it is larger than the sum of its proper divisors (2117543).

86817541 is a wasteful number, since it uses less digits than its factorization.

86817541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117542.

The product of its digits is 53760, while the sum is 40.

The square root of 86817541 is about 9317.5930904928. The cubic root of 86817541 is about 442.7947811847.

The spelling of 86817541 in words is "eighty-six million, eight hundred seventeen thousand, five hundred forty-one".