86660866 has 8 divisors (see below), whose sum is σ = 137637900. Its totient is φ = 40781568.

The previous prime is 86660851. The next prime is 86660869. The reversal of 86660866 is 66806668.

It can be written as a sum of positive squares in 2 ways, for example, as 86583025 + 77841 = 9305^2 + 279^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (86660869) 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 3 ways as a sum of consecutive naturals, for example, 1274391 + ... + 1274458.

Almost surely, 2^86660866 is an apocalyptic number.

86660866 is a deficient number, since it is larger than the sum of its proper divisors (50977034).

86660866 is a wasteful number, since it uses less digits than its factorization.

86660866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2548868.

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 86660866 is about 9309.1818115235. The cubic root of 86660866 is about 442.5282580611.

The spelling of 86660866 in words is "eighty-six million, six hundred sixty thousand, eight hundred sixty-six".