1075889665 has 16 divisors (see below), whose sum is σ = 1316830608. Its totient is φ = 843571456.

The previous prime is 1075889621. The next prime is 1075889681. The reversal of 1075889665 is 5669885701.

It can be written as a sum of positive squares in 8 ways, for example, as 47789569 + 1028100096 = 6913^2 + 32064^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1075889665 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362367 + ... + 365323.

It is an arithmetic number, because the mean of its divisors is an integer number (82301913).

Almost surely, 2^1075889665 is an apocalyptic number.

It is an amenable number.

1075889665 is a deficient number, since it is larger than the sum of its proper divisors (240940943).

1075889665 is a wasteful number, since it uses less digits than its factorization.

1075889665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4388.

The product of its (nonzero) digits is 3628800, while the sum is 55.

The square root of 1075889665 is about 32800.7570796773. The cubic root of 1075889665 is about 1024.6823255085.

The spelling of 1075889665 in words is "one billion, seventy-five million, eight hundred eighty-nine thousand, six hundred sixty-five".