86387717 has 4 divisors (see below), whose sum is σ = 93032940. Its totient is φ = 79742496.

The previous prime is 86387683. The next prime is 86387729. The reversal of 86387717 is 71778368.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28718881 + 57668836 = 5359^2 + 7594^2 .

It is a cyclic number.

It is not a de Polignac number, because 86387717 - 2⁸ = 86387461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86387797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3322592 + ... + 3322617.

It is an arithmetic number, because the mean of its divisors is an integer number (23258235).

Almost surely, 2^86387717 is an apocalyptic number.

It is an amenable number.

86387717 is a deficient number, since it is larger than the sum of its proper divisors (6645223).

86387717 is a wasteful number, since it uses less digits than its factorization.

86387717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6645222.

The product of its digits is 395136, while the sum is 47.

The square root of 86387717 is about 9294.4992872128. The cubic root of 86387717 is about 442.0628293260.

The spelling of 86387717 in words is "eighty-six million, three hundred eighty-seven thousand, seven hundred seventeen".