66600052 has 12 divisors (see below), whose sum is σ = 116649540. Its totient is φ = 33271616.

The previous prime is 66600049. The next prime is 66600071. The reversal of 66600052 is 25000666.

It can be written as a sum of positive squares in 2 ways, for example, as 45751696 + 20848356 = 6764^2 + 4566^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1303 + ... + 11614.

It is an arithmetic number, because the mean of its divisors is an integer number (9720795).

Almost surely, 2^66600052 is an apocalyptic number.

It is an amenable number.

66600052 is a deficient number, since it is larger than the sum of its proper divisors (50049488).

66600052 is a wasteful number, since it uses less digits than its factorization.

66600052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14210 (or 14208 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 66600052 is about 8160.8854911707. The cubic root of 66600052 is about 405.3450334106.

The spelling of 66600052 in words is "sixty-six million, six hundred thousand, fifty-two".