965665 has 4 divisors (see below), whose sum is σ = 1158804. Its totient is φ = 772528.

The previous prime is 965659. The next prime is 965677. The reversal of 965665 is 566569.

It is a happy number.

965665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 566569 = 461 ⋅1229.

It can be written as a sum of positive squares in 2 ways, for example, as 121104 + 844561 = 348^2 + 919^2 .

It is a cyclic number.

It is not a de Polignac number, because 965665 - 2¹⁷ = 834593 is a prime.

It is a Duffinian number.

965665 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96562 + ... + 96571.

It is an arithmetic number, because the mean of its divisors is an integer number (289701).

2⁹⁶⁵⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

965665 is a deficient number, since it is larger than the sum of its proper divisors (193139).

965665 is a wasteful number, since it uses less digits than its factorization.

965665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193138.

The product of its digits is 48600, while the sum is 37.

The square root of 965665 is about 982.6825530150. The cubic root of 965665 is about 98.8421454706.

The spelling of 965665 in words is "nine hundred sixty-five thousand, six hundred sixty-five".