11012609 has 4 divisors (see below), whose sum is σ = 11592240. Its totient is φ = 10432980.

The previous prime is 11012579. The next prime is 11012611. The reversal of 11012609 is 90621011.

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 a de Polignac number, because none of the positive numbers 2^k-11012609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11012669) 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, 289787 + ... + 289824.

It is an arithmetic number, because the mean of its divisors is an integer number (2898060).

Almost surely, 2^11012609 is an apocalyptic number.

11012609 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11012609 is a deficient number, since it is larger than the sum of its proper divisors (579631).

11012609 is an equidigital number, since it uses as much as digits as its factorization.

11012609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579630.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 11012609 is about 3318.5251242080. The cubic root of 11012609 is about 222.4829528664.

The spelling of 11012609 in words is "eleven million, twelve thousand, six hundred nine".