66610052 has 12 divisors (see below), whose sum is σ = 116639040. Its totient is φ = 33284616.

The previous prime is 66610043. The next prime is 66610069. The reversal of 66610052 is 25001666.

66610052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4073 + ... + 12239.

It is an arithmetic number, because the mean of its divisors is an integer number (9719920).

Almost surely, 2^66610052 is an apocalyptic number.

It is an amenable number.

66610052 is a deficient number, since it is larger than the sum of its proper divisors (50028988).

66610052 is a wasteful number, since it uses less digits than its factorization.

66610052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10210 (or 10208 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 66610052 is about 8161.4981467865. The cubic root of 66610052 is about 405.3653199187.

The spelling of 66610052 in words is "sixty-six million, six hundred ten thousand, fifty-two".