18586066 has 16 divisors (see below), whose sum is σ = 31073760. Its totient is φ = 8285760.

The previous prime is 18586063. The next prime is 18586067. The reversal of 18586066 is 66068581.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18586063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13740 + ... + 15031.

It is an arithmetic number, because the mean of its divisors is an integer number (1942110).

Almost surely, 2^18586066 is an apocalyptic number.

18586066 is a deficient number, since it is larger than the sum of its proper divisors (12487694).

18586066 is a wasteful number, since it uses less digits than its factorization.

18586066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28809.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 18586066 is about 4311.1559934663. The cubic root of 18586066 is about 264.8881265050. Note that the first 3 decimals are identical.

The spelling of 18586066 in words is "eighteen million, five hundred eighty-six thousand, sixty-six".