86787677 has 4 divisors (see below), whose sum is σ = 86810556. Its totient is φ = 86764800.

The previous prime is 86787667. The next prime is 86787683. The reversal of 86787677 is 77678768.

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 71334916 + 15452761 = 8446^2 + 3931^2 .

It is a cyclic number.

It is not a de Polignac number, because 86787677 - 2¹⁰ = 86786653 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 (86787637) 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 3 ways as a sum of consecutive naturals, for example, 4238 + ... + 13839.

It is an arithmetic number, because the mean of its divisors is an integer number (21702639).

Almost surely, 2^86787677 is an apocalyptic number.

It is an amenable number.

86787677 is a deficient number, since it is larger than the sum of its proper divisors (22879).

86787677 is a wasteful number, since it uses less digits than its factorization.

86787677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22878.

The product of its digits is 5531904, while the sum is 56.

The square root of 86787677 is about 9315.9903928675. The cubic root of 86787677 is about 442.7440036585.

The spelling of 86787677 in words is "eighty-six million, seven hundred eighty-seven thousand, six hundred seventy-seven".