969548561 has 4 divisors (see below), whose sum is σ = 1002981300. Its totient is φ = 936115824.

The previous prime is 969548533. The next prime is 969548581. The reversal of 969548561 is 165845969.

It is a happy number.

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 294328336 + 675220225 = 17156^2 + 25985^2 .

It is not a de Polignac number, because 969548561 - 2¹⁴ = 969532177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (969548521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16716326 + ... + 16716383.

It is an arithmetic number, because the mean of its divisors is an integer number (250745325).

Almost surely, 2^969548561 is an apocalyptic number.

It is an amenable number.

969548561 is a deficient number, since it is larger than the sum of its proper divisors (33432739).

969548561 is a wasteful number, since it uses less digits than its factorization.

969548561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33432738.

The product of its digits is 2332800, while the sum is 53.

The square root of 969548561 is about 31137.5747449926. The cubic root of 969548561 is about 989.7447088566.

The spelling of 969548561 in words is "nine hundred sixty-nine million, five hundred forty-eight thousand, five hundred sixty-one".