1071660565 has 16 divisors (see below), whose sum is σ = 1300945536. Its totient is φ = 847412800.

The previous prime is 1071660547. The next prime is 1071660589. The reversal of 1071660565 is 5650661701.

It is not a de Polignac number, because 1071660565 - 2¹¹ = 1071658517 is a prime.

It is a super-2 number, since 2×1071660565² = 2296912733152238450, which contains 22 as substring.

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 (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169155 + ... + 175375.

It is an arithmetic number, because the mean of its divisors is an integer number (81309096).

Almost surely, 2^1071660565 is an apocalyptic number.

It is an amenable number.

1071660565 is a deficient number, since it is larger than the sum of its proper divisors (229284971).

1071660565 is a wasteful number, since it uses less digits than its factorization.

1071660565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6620.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 1071660565 is about 32736.2271039288. The cubic root of 1071660565 is about 1023.3379576468.

The spelling of 1071660565 in words is "one billion, seventy-one million, six hundred sixty thousand, five hundred sixty-five".