86768986 has 16 divisors (see below), whose sum is σ = 142563240. Its totient is φ = 39424000.

The previous prime is 86768977. The next prime is 86768989. The reversal of 86768986 is 68986768.

It can be written as a sum of positive squares in 4 ways, for example, as 61074225 + 25694761 = 7815^2 + 5069^2 .

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a self number, because there is not a number n which added to its sum of digits gives 86768986.

It is not an unprimeable number, because it can be changed into a prime (86768989) 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 7 ways as a sum of consecutive naturals, for example, 43015 + ... + 44986.

Almost surely, 2^86768986 is an apocalyptic number.

86768986 is a deficient number, since it is larger than the sum of its proper divisors (55794254).

86768986 is a wasteful number, since it uses less digits than its factorization.

86768986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88049.

The product of its digits is 6967296, while the sum is 58.

The square root of 86768986 is about 9314.9871712204. The cubic root of 86768986 is about 442.7122175701.

The spelling of 86768986 in words is "eighty-six million, seven hundred sixty-eight thousand, nine hundred eighty-six".