86705671 has 8 divisors (see below), whose sum is σ = 93454704. Its totient is φ = 79968000.

The previous prime is 86705651. The next prime is 86705711. The reversal of 86705671 is 17650768.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86705671 - 2⁵ = 86705639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86705651) 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 7 ways as a sum of consecutive naturals, for example, 19671 + ... + 23671.

It is an arithmetic number, because the mean of its divisors is an integer number (11681838).

Almost surely, 2^86705671 is an apocalyptic number.

86705671 is a deficient number, since it is larger than the sum of its proper divisors (6749033).

86705671 is a wasteful number, since it uses less digits than its factorization.

86705671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5681.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 86705671 is about 9311.5879956106. The cubic root of 86705671 is about 442.6045095591.

It can be divided in two parts, 8670 and 5671, that added together give a palindrome (14341).

The spelling of 86705671 in words is "eighty-six million, seven hundred five thousand, six hundred seventy-one".