9561609 has 24 divisors (see below), whose sum is σ = 14606592. Its totient is φ = 6017760.

The previous prime is 9561557. The next prime is 9561611. The reversal of 9561609 is 9061659.

It is not a de Polignac number, because 9561609 - 2¹³ = 9553417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9561659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11599 + ... + 12395.

It is an arithmetic number, because the mean of its divisors is an integer number (608608).

Almost surely, 2^9561609 is an apocalyptic number.

It is an amenable number.

9561609 is a deficient number, since it is larger than the sum of its proper divisors (5044983).

9561609 is a wasteful number, since it uses less digits than its factorization.

9561609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877 (or 874 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 9561609 is about 3092.1851496959. The cubic root of 9561609 is about 212.2480261359.

The spelling of 9561609 in words is "nine million, five hundred sixty-one thousand, six hundred nine".