11061809 has 4 divisors (see below), whose sum is σ = 12067440. Its totient is φ = 10056180.

The previous prime is 11061803. The next prime is 11061811. The reversal of 11061809 is 90816011.

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 11061809 - 2¹² = 11057713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11061803) 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, 502799 + ... + 502820.

It is an arithmetic number, because the mean of its divisors is an integer number (3016860).

Almost surely, 2^11061809 is an apocalyptic number.

It is an amenable number.

11061809 is a deficient number, since it is larger than the sum of its proper divisors (1005631).

11061809 is a wasteful number, since it uses less digits than its factorization.

11061809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005630.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 11061809 is about 3325.9297948093. The cubic root of 11061809 is about 222.8137827534.

The spelling of 11061809 in words is "eleven million, sixty-one thousand, eight hundred nine".