665214133 has 2 divisors, whose sum is σ = 665214134. Its totient is φ = 665214132.

The previous prime is 665214127. The next prime is 665214139. The reversal of 665214133 is 331412566.

It is a balanced prime because it is at equal distance from previous prime (665214127) and next prime (665214139).

It can be written as a sum of positive squares in only one way, i.e., 545596164 + 119617969 = 23358^2 + 10937^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-665214133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 665214095 and 665214104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665214139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332607066 + 332607067.

It is an arithmetic number, because the mean of its divisors is an integer number (332607067).

Almost surely, 2^665214133 is an apocalyptic number.

It is an amenable number.

665214133 is a deficient number, since it is larger than the sum of its proper divisors (1).

665214133 is an equidigital number, since it uses as much as digits as its factorization.

665214133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 665214133 is about 25791.7454430676. The cubic root of 665214133 is about 872.9455508781.

Adding to 665214133 its reverse (331412566), we get a palindrome (996626699).

The spelling of 665214133 in words is "six hundred sixty-five million, two hundred fourteen thousand, one hundred thirty-three".