86517801 has 20 divisors (see below), whose sum is σ = 129499524. Its totient is φ = 57564000.

The previous prime is 86517799. The next prime is 86517841. The reversal of 86517801 is 10871568.

It can be written as a sum of positive squares in 2 ways, for example, as 7290000 + 79227801 = 2700^2 + 8901^2 .

It is not a de Polignac number, because 86517801 - 2¹ = 86517799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86517841) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 65851 + ... + 67151.

Almost surely, 2^86517801 is an apocalyptic number.

86517801 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

86517801 is a deficient number, since it is larger than the sum of its proper divisors (42981723).

86517801 is a wasteful number, since it uses less digits than its factorization.

86517801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134 (or 2125 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The square root of 86517801 is about 9301.4945573279. The cubic root of 86517801 is about 442.2846064608.

It can be divided in two parts, 8 and 6517801, that added together give a square (6517809 = 2553²).

The spelling of 86517801 in words is "eighty-six million, five hundred seventeen thousand, eight hundred one".