1065135605 has 4 divisors (see below), whose sum is σ = 1278162732. Its totient is φ = 852108480.

The previous prime is 1065135593. The next prime is 1065135619. The reversal of 1065135605 is 5065315601.

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 546343876 + 518791729 = 23374^2 + 22777^2 .

It is not a de Polignac number, because 1065135605 - 2⁸ = 1065135349 is a prime.

It is a super-3 number, since 3×1065135605³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106513556 + ... + 106513565.

It is an arithmetic number, because the mean of its divisors is an integer number (319540683).

Almost surely, 2^1065135605 is an apocalyptic number.

It is an amenable number.

1065135605 is a deficient number, since it is larger than the sum of its proper divisors (213027127).

1065135605 is an equidigital number, since it uses as much as digits as its factorization.

1065135605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213027126.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 1065135605 is about 32636.4153209264. The cubic root of 1065135605 is about 1021.2568145238.

The spelling of 1065135605 in words is "one billion, sixty-five million, one hundred thirty-five thousand, six hundred five".