11612811 has 8 divisors (see below), whose sum is σ = 17695744. Its totient is φ = 6635880.

The previous prime is 11612803. The next prime is 11612837. The reversal of 11612811 is 11821611.

It is a happy number.

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

It is not a de Polignac number, because 11612811 - 2³ = 11612803 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 552991 = 11612811 / (1 + 1 + 6 + 1 + 2 + 8 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11612801) 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, 276475 + ... + 276516.

It is an arithmetic number, because the mean of its divisors is an integer number (2211968).

Almost surely, 2^11612811 is an apocalyptic number.

11612811 is a deficient number, since it is larger than the sum of its proper divisors (6082933).

11612811 is an equidigital number, since it uses as much as digits as its factorization.

11612811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553001.

The product of its digits is 96, while the sum is 21.

The square root of 11612811 is about 3407.7574737648. The cubic root of 11612811 is about 226.4535427039.

The spelling of 11612811 in words is "eleven million, six hundred twelve thousand, eight hundred eleven".