9561985 has 8 divisors (see below), whose sum is σ = 11494440. Its totient is φ = 7636224.

The previous prime is 9561983. The next prime is 9561989. The reversal of 9561985 is 5891659.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3326976 + 6235009 = 1824^2 + 2497^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9561985 - 2¹ = 9561983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9561983) 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 7 ways as a sum of consecutive naturals, for example, 2361 + ... + 4969.

It is an arithmetic number, because the mean of its divisors is an integer number (1436805).

Almost surely, 2^9561985 is an apocalyptic number.

It is an amenable number.

9561985 is a deficient number, since it is larger than the sum of its proper divisors (1932455).

9561985 is a wasteful number, since it uses less digits than its factorization.

9561985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3347.

The product of its digits is 97200, while the sum is 43.

The square root of 9561985 is about 3092.2459475275. The cubic root of 9561985 is about 212.2508082413.

The spelling of 9561985 in words is "nine million, five hundred sixty-one thousand, nine hundred eighty-five".