66030656 has 14 divisors (see below), whose sum is σ = 131029710. Its totient is φ = 33015296.

The previous prime is 66030641. The next prime is 66030659. The reversal of 66030656 is 65603066.

66030656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 62094400 + 3936256 = 7880^2 + 1984^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (66030659) 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 as a sum of consecutive naturals, namely, 515801 + ... + 515928.

It is an arithmetic number, because the mean of its divisors is an integer number (9359265).

Almost surely, 2^66030656 is an apocalyptic number.

It is an amenable number.

66030656 is a deficient number, since it is larger than the sum of its proper divisors (64999054).

66030656 is a wasteful number, since it uses less digits than its factorization.

66030656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031741 (or 1031731 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 66030656 is about 8125.9249319693. The cubic root of 66030656 is about 404.1865622024.

The spelling of 66030656 in words is "sixty-six million, thirty thousand, six hundred fifty-six".