1065591 has 6 divisors (see below), whose sum is σ = 1539200. Its totient is φ = 710388.

The previous prime is 1065569. The next prime is 1065593. The reversal of 1065591 is 1955601.

1065591 is a `hidden beast` number, since 1 + 0 + 655 + 9 + 1 = 666.

It is not a de Polignac number, because 1065591 - 2⁶ = 1065527 is a prime.

It is a super-2 number, since 2×1065591² = 2270968358562, which contains 22 as substring.

It is a Duffinian number.

1065591 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065593) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59191 + ... + 59208.

2^1065591 is an apocalyptic number.

1065591 is a deficient number, since it is larger than the sum of its proper divisors (473609).

1065591 is a wasteful number, since it uses less digits than its factorization.

1065591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118405 (or 118402 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 1065591 is about 1032.2746727495. The cubic root of 1065591 is about 102.1402338712.

The spelling of 1065591 in words is "one million, sixty-five thousand, five hundred ninety-one".