135065641 has 4 divisors (see below), whose sum is σ = 135386884. Its totient is φ = 134744400.

The previous prime is 135065633. The next prime is 135065647. The reversal of 135065641 is 146560531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29387241 + 105678400 = 5421^2 + 10280^2 .

It is a cyclic number.

It is not a de Polignac number, because 135065641 - 2³ = 135065633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135065647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159990 + ... + 160831.

It is an arithmetic number, because the mean of its divisors is an integer number (33846721).

Almost surely, 2^135065641 is an apocalyptic number.

It is an amenable number.

135065641 is a deficient number, since it is larger than the sum of its proper divisors (321243).

135065641 is an equidigital number, since it uses as much as digits as its factorization.

135065641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321242.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 135065641 is about 11621.7744342247. The cubic root of 135065641 is about 513.0759146281.

The spelling of 135065641 in words is "one hundred thirty-five million, sixty-five thousand, six hundred forty-one".