3561969 has 8 divisors (see below), whose sum is σ = 4787200. Its totient is φ = 2355696.

The previous prime is 3561947. The next prime is 3561977. The reversal of 3561969 is 9691653.

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

It is not a de Polignac number, because 3561969 - 2⁷ = 3561841 is a prime.

It is a super-2 number, since 2×3561969² = 25375246313922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3511969) 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 7 ways as a sum of consecutive naturals, for example, 4294 + ... + 5055.

It is an arithmetic number, because the mean of its divisors is an integer number (598400).

Almost surely, 2^3561969 is an apocalyptic number.

It is an amenable number.

3561969 is a deficient number, since it is larger than the sum of its proper divisors (1225231).

3561969 is a wasteful number, since it uses less digits than its factorization.

3561969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9479.

The product of its digits is 43740, while the sum is 39.

The square root of 3561969 is about 1887.3179382393. The cubic root of 3561969 is about 152.7202800666.

The spelling of 3561969 in words is "three million, five hundred sixty-one thousand, nine hundred sixty-nine".