66063305 has 64 divisors (see below), whose sum is σ = 104993280. Its totient is φ = 38707200.

The previous prime is 66063293. The next prime is 66063307. The reversal of 66063305 is 50336066.

66063305 = 305² + 306² + ... + 609².

66063305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66063305 - 2⁴ = 66063289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (66063307) 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 63 ways as a sum of consecutive naturals, for example, 681017 + ... + 681113.

It is an arithmetic number, because the mean of its divisors is an integer number (1640520).

Almost surely, 2^66063305 is an apocalyptic number.

It is an amenable number.

66063305 is a deficient number, since it is larger than the sum of its proper divisors (38929975).

66063305 is a wasteful number, since it uses less digits than its factorization.

66063305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 66063305 is about 8127.9336242369. The cubic root of 66063305 is about 404.2531681977.

66063305 divided by its sum of digits (29) gives a triangular number (2278045 = T₂₁₃₄).

The spelling of 66063305 in words is "sixty-six million, sixty-three thousand, three hundred five".