86786661 has 32 divisors (see below), whose sum is σ = 132128640. Its totient is φ = 50229504.

The previous prime is 86786653. The next prime is 86786669. The reversal of 86786661 is 16668768.

It is an interprime number because it is at equal distance from previous prime (86786653) and next prime (86786669).

It is not a de Polignac number, because 86786661 - 2³ = 86786653 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 86786661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86786669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127855 + ... + 128531.

It is an arithmetic number, because the mean of its divisors is an integer number (4129020).

Almost surely, 2^86786661 is an apocalyptic number.

It is an amenable number.

86786661 is a deficient number, since it is larger than the sum of its proper divisors (45341979).

86786661 is a wasteful number, since it uses less digits than its factorization.

86786661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885.

The product of its digits is 580608, while the sum is 48.

The square root of 86786661 is about 9315.9358628106. The cubic root of 86786661 is about 442.7422759567.

The spelling of 86786661 in words is "eighty-six million, seven hundred eighty-six thousand, six hundred sixty-one".