86785911 has 20 divisors (see below), whose sum is σ = 132663432. Its totient is φ = 56509488.

The previous prime is 86785849. The next prime is 86785913. The reversal of 86785911 is 11958768.

It is not a de Polignac number, because 86785911 - 2¹⁵ = 86753143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86785913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8976 + ... + 15941.

Almost surely, 2^86785911 is an apocalyptic number.

86785911 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

86785911 is a deficient number, since it is larger than the sum of its proper divisors (45877521).

86785911 is a wasteful number, since it uses less digits than its factorization.

86785911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24972 (or 24963 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The square root of 86785911 is about 9315.8956091189. The cubic root of 86785911 is about 442.7410005777.

The spelling of 86785911 in words is "eighty-six million, seven hundred eighty-five thousand, nine hundred eleven".