660135341 has 2 divisors, whose sum is σ = 660135342. Its totient is φ = 660135340.

The previous prime is 660135239. The next prime is 660135349. The reversal of 660135341 is 143531066.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 657717316 + 2418025 = 25646^2 + 1555^2 .

It is a cyclic number.

It is not a de Polignac number, because 660135341 - 2²² = 655941037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660135349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330067670 + 330067671.

It is an arithmetic number, because the mean of its divisors is an integer number (330067671).

Almost surely, 2^660135341 is an apocalyptic number.

It is an amenable number.

660135341 is a deficient number, since it is larger than the sum of its proper divisors (1).

660135341 is an equidigital number, since it uses as much as digits as its factorization.

660135341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 660135341 is about 25693.0990929471. The cubic root of 660135341 is about 870.7182780945.

The spelling of 660135341 in words is "six hundred sixty million, one hundred thirty-five thousand, three hundred forty-one".