945665 has 16 divisors (see below), whose sum is σ = 1330560. Its totient is φ = 631680.

The previous prime is 945647. The next prime is 945671. The reversal of 945665 is 566549.

It is a happy number.

It is not a de Polignac number, because 945665 - 2⁶ = 945601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 945665.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1106 + ... + 1764.

It is an arithmetic number, because the mean of its divisors is an integer number (83160).

2⁹⁴⁵⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

945665 is a deficient number, since it is larger than the sum of its proper divisors (384895).

945665 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 11 representation: 945665 = (596546)₁₁.

945665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712.

The product of its digits is 32400, while the sum is 35.

The square root of 945665 is about 972.4530837012. The cubic root of 945665 is about 98.1550025231.

The spelling of 945665 in words is "nine hundred forty-five thousand, six hundred sixty-five".