945569 has 4 divisors (see below), whose sum is σ = 958596. Its totient is φ = 932544.

The previous prime is 945547. The next prime is 945577. The reversal of 945569 is 965549.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 286225 + 659344 = 535^2 + 812^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-945569 is a prime.

It is a super-2 number, since 2×945569² = 1788201467522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (945589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6404 + ... + 6549.

It is an arithmetic number, because the mean of its divisors is an integer number (239649).

2⁹⁴⁵⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

945569 is a deficient number, since it is larger than the sum of its proper divisors (13027).

945569 is a wasteful number, since it uses less digits than its factorization.

945569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13026.

The product of its digits is 48600, while the sum is 38.

The square root of 945569 is about 972.4037227407. The cubic root of 945569 is about 98.1516809807.

The spelling of 945569 in words is "nine hundred forty-five thousand, five hundred sixty-nine".