66655301 has 4 divisors (see below), whose sum is σ = 68805504. Its totient is φ = 64505100.

The previous prime is 66655271. The next prime is 66655319. The reversal of 66655301 is 10355666.

66655301 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66655301 - 2¹⁴ = 66638917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66655321) 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 3 ways as a sum of consecutive naturals, for example, 1075055 + ... + 1075116.

It is an arithmetic number, because the mean of its divisors is an integer number (17201376).

Almost surely, 2^66655301 is an apocalyptic number.

It is an amenable number.

66655301 is a deficient number, since it is larger than the sum of its proper divisors (2150203).

66655301 is a wasteful number, since it uses less digits than its factorization.

66655301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150202.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 66655301 is about 8164.2697775123. The cubic root of 66655301 is about 405.4570889685.

The spelling of 66655301 in words is "sixty-six million, six hundred fifty-five thousand, three hundred one".