86387617 has 6 divisors (see below), whose sum is σ = 87626594. Its totient is φ = 85165920.

The previous prime is 86387611. The next prime is 86387629. The reversal of 86387617 is 71678368.

It can be written as a sum of positive squares in only one way, i.e., 46457856 + 39929761 = 6816^2 + 6319^2 .

It is a de Polignac number, because none of the positive numbers 2^k-86387617 is a prime.

It is a super-3 number, since 3×86387617³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86387611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3528 + ... + 13609.

Almost surely, 2^86387617 is an apocalyptic number.

It is an amenable number.

86387617 is a deficient number, since it is larger than the sum of its proper divisors (1238977).

86387617 is an equidigital number, since it uses as much as digits as its factorization.

86387617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17279 (or 17208 counting only the distinct ones).

The product of its digits is 338688, while the sum is 46.

The square root of 86387617 is about 9294.4939076853. The cubic root of 86387617 is about 442.0626587528.

The spelling of 86387617 in words is "eighty-six million, three hundred eighty-seven thousand, six hundred seventeen".