665741159 has 2 divisors, whose sum is σ = 665741160. Its totient is φ = 665741158.

The previous prime is 665741107. The next prime is 665741189. The reversal of 665741159 is 951147566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 665741159 - 2¹² = 665737063 is a prime.

It is a super-2 number, since 2×665741159² = 886422581573326562, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665741189) 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 as a sum of consecutive naturals, namely, 332870579 + 332870580.

It is an arithmetic number, because the mean of its divisors is an integer number (332870580).

Almost surely, 2^665741159 is an apocalyptic number.

665741159 is a deficient number, since it is larger than the sum of its proper divisors (1).

665741159 is an equidigital number, since it uses as much as digits as its factorization.

665741159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 44.

The square root of 665741159 is about 25801.9603712586. The cubic root of 665741159 is about 873.1760248136.

The spelling of 665741159 in words is "six hundred sixty-five million, seven hundred forty-one thousand, one hundred fifty-nine".