86850729 has 72 divisors (see below), whose sum is σ = 158034240. Its totient is φ = 44883072.

The previous prime is 86850727. The next prime is 86850749. The reversal of 86850729 is 92705868.

It is not a de Polignac number, because 86850729 - 2¹ = 86850727 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86850721) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1638667 + ... + 1638719.

It is an arithmetic number, because the mean of its divisors is an integer number (2194920).

Almost surely, 2^86850729 is an apocalyptic number.

It is an amenable number.

86850729 is a deficient number, since it is larger than the sum of its proper divisors (71183511).

86850729 is a wasteful number, since it uses less digits than its factorization.

86850729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 86850729 is about 9319.3738523572. The cubic root of 86850729 is about 442.8511968232.

The spelling of 86850729 in words is "eighty-six million, eight hundred fifty thousand, seven hundred twenty-nine".