86729871 has 8 divisors (see below), whose sum is σ = 115703680. Its totient is φ = 57787992.

The previous prime is 86729833. The next prime is 86729879. The reversal of 86729871 is 17892768.

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

It is not a de Polignac number, because 86729871 - 2¹⁰ = 86728847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86729871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86729879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 691 + ... + 13188.

It is an arithmetic number, because the mean of its divisors is an integer number (14462960).

Almost surely, 2^86729871 is an apocalyptic number.

86729871 is a deficient number, since it is larger than the sum of its proper divisors (28973809).

86729871 is a wasteful number, since it uses less digits than its factorization.

86729871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15965.

The product of its digits is 338688, while the sum is 48.

The square root of 86729871 is about 9312.8873610712. The cubic root of 86729871 is about 442.6456834626.

The spelling of 86729871 in words is "eighty-six million, seven hundred twenty-nine thousand, eight hundred seventy-one".