86172365 has 8 divisors (see below), whose sum is σ = 105929208. Its totient is φ = 67256320.

The previous prime is 86172313. The next prime is 86172367. The reversal of 86172365 is 56327168.

It can be written as a sum of positive squares in 4 ways, for example, as 6980164 + 79192201 = 2642^2 + 8899^2 .

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

It is not a de Polignac number, because 86172365 - 2²⁴ = 69395149 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 (86172367) 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 7 ways as a sum of consecutive naturals, for example, 209972 + ... + 210381.

It is an arithmetic number, because the mean of its divisors is an integer number (13241151).

Almost surely, 2^86172365 is an apocalyptic number.

It is an amenable number.

86172365 is a deficient number, since it is larger than the sum of its proper divisors (19756843).

86172365 is a wasteful number, since it uses less digits than its factorization.

86172365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420399.

The product of its digits is 60480, while the sum is 38.

The square root of 86172365 is about 9282.9071416233. The cubic root of 86172365 is about 441.6951909112.

The spelling of 86172365 in words is "eighty-six million, one hundred seventy-two thousand, three hundred sixty-five".