66606582 has 24 divisors (see below), whose sum is σ = 154962936. Its totient is φ = 19030368.

The previous prime is 66606577. The next prime is 66606593. The reversal of 66606582 is 28560666.

It is a self number, because there is not a number n which added to its sum of digits gives 66606582.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 112983 + ... + 113570.

It is an arithmetic number, because the mean of its divisors is an integer number (6456789).

Almost surely, 2^66606582 is an apocalyptic number.

66606582 is an abundant number, since it is smaller than the sum of its proper divisors (88356354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66606582 is a wasteful number, since it uses less digits than its factorization.

66606582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226572 (or 226565 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 66606582 is about 8161.2855604984. The cubic root of 66606582 is about 405.3582807304.

The spelling of 66606582 in words is "sixty-six million, six hundred six thousand, five hundred eighty-two".