965591 has 8 divisors (see below), whose sum is σ = 1079568. Its totient is φ = 856000.

The previous prime is 965567. The next prime is 965603. The reversal of 965591 is 195569.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 965591 - 2¹⁸ = 703447 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (965551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 620 + ... + 1521.

It is an arithmetic number, because the mean of its divisors is an integer number (134946).

2⁹⁶⁵⁵⁹¹ is an apocalyptic number.

965591 is a deficient number, since it is larger than the sum of its proper divisors (113977).

965591 is a wasteful number, since it uses less digits than its factorization.

965591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193.

The product of its digits is 12150, while the sum is 35.

The square root of 965591 is about 982.6449002564. The cubic root of 965591 is about 98.8396206110.

The spelling of 965591 in words is "nine hundred sixty-five thousand, five hundred ninety-one".