665201707227 has 24 divisors (see below), whose sum is σ = 967881598320. Its totient is φ = 440221832640.

The previous prime is 665201707207. The next prime is 665201707267. The reversal of 665201707227 is 722707102566.

It is not a de Polignac number, because 665201707227 - 2¹⁴ = 665201690843 is a prime.

It is a super-2 number, since 2×665201707227² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (665201707207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11456473 + ... + 11514389.

It is an arithmetic number, because the mean of its divisors is an integer number (40328399930).

Almost surely, 2^665201707227 is an apocalyptic number.

665201707227 is a deficient number, since it is larger than the sum of its proper divisors (302679891093).

665201707227 is a wasteful number, since it uses less digits than its factorization.

665201707227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67243 (or 67240 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 45.

The spelling of 665201707227 in words is "six hundred sixty-five billion, two hundred one million, seven hundred seven thousand, two hundred twenty-seven".