10881609 has 4 divisors (see below), whose sum is σ = 14508816. Its totient is φ = 7254404.

The previous prime is 10881593. The next prime is 10881613. The reversal of 10881609 is 90618801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10881609 - 2⁴ = 10881593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10881609.

It is not an unprimeable number, because it can be changed into a prime (10881679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1813599 + ... + 1813604.

It is an arithmetic number, because the mean of its divisors is an integer number (3627204).

Almost surely, 2^10881609 is an apocalyptic number.

It is an amenable number.

10881609 is a deficient number, since it is larger than the sum of its proper divisors (3627207).

10881609 is an equidigital number, since it uses as much as digits as its factorization.

10881609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3627206.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 10881609 is about 3298.7283913654. The cubic root of 10881609 is about 221.5972529059.

The spelling of 10881609 in words is "ten million, eight hundred eighty-one thousand, six hundred nine".