86066642 has 4 divisors (see below), whose sum is σ = 129099966. Its totient is φ = 43033320.

The previous prime is 86066641. The next prime is 86066653. The reversal of 86066642 is 24666068.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 85729081 + 337561 = 9259^2 + 581^2 .

It is a junction number, because it is equal to n+sod(n) for n = 86066596 and 86066605.

It is not an unprimeable number, because it can be changed into a prime (86066641) 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 as a sum of consecutive naturals, namely, 21516659 + ... + 21516662.

Almost surely, 2^86066642 is an apocalyptic number.

86066642 is a deficient number, since it is larger than the sum of its proper divisors (43033324).

86066642 is a wasteful number, since it uses less digits than its factorization.

86066642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43033323.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 86066642 is about 9277.2108955224. The cubic root of 86066642 is about 441.5144815813.

The spelling of 86066642 in words is "eighty-six million, sixty-six thousand, six hundred forty-two".