86445586 has 4 divisors (see below), whose sum is σ = 129668382. Its totient is φ = 43222792.

The previous prime is 86445581. The next prime is 86445587. The reversal of 86445586 is 68554468.

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., 59768361 + 26677225 = 7731^2 + 5165^2 .

It is not an unprimeable number, because it can be changed into a prime (86445581) 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, 21611395 + ... + 21611398.

Almost surely, 2^86445586 is an apocalyptic number.

86445586 is a deficient number, since it is larger than the sum of its proper divisors (43222796).

86445586 is a wasteful number, since it uses less digits than its factorization.

86445586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43222795.

The product of its digits is 921600, while the sum is 46.

The square root of 86445586 is about 9297.6118439092. The cubic root of 86445586 is about 442.1615162871.

The spelling of 86445586 in words is "eighty-six million, four hundred forty-five thousand, five hundred eighty-six".