1345066565 has 16 divisors (see below), whose sum is σ = 1685242368. Its totient is φ = 1028666496.

The previous prime is 1345066517. The next prime is 1345066577. The reversal of 1345066565 is 5656605431.

It is a cyclic number.

It is not a de Polignac number, because 1345066565 - 2⁶ = 1345066501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 390089 + ... + 393521.

It is an arithmetic number, because the mean of its divisors is an integer number (105327648).

Almost surely, 2^1345066565 is an apocalyptic number.

It is an amenable number.

1345066565 is a deficient number, since it is larger than the sum of its proper divisors (340175803).

1345066565 is a wasteful number, since it uses less digits than its factorization.

1345066565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6868.

The product of its (nonzero) digits is 324000, while the sum is 41.

The square root of 1345066565 is about 36675.1491476177. The cubic root of 1345066565 is about 1103.8615151877.

The spelling of 1345066565 in words is "one billion, three hundred forty-five million, sixty-six thousand, five hundred sixty-five".