11720801 has 4 divisors (see below), whose sum is σ = 11841732. Its totient is φ = 11599872.

The previous prime is 11720789. The next prime is 11720809. The reversal of 11720801 is 10802711.

11720801 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10802711 = 1913 ⋅5647.

It can be written as a sum of positive squares in 2 ways, for example, as 6635776 + 5085025 = 2576^2 + 2255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11720801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11720809) 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 3 ways as a sum of consecutive naturals, for example, 60320 + ... + 60513.

It is an arithmetic number, because the mean of its divisors is an integer number (2960433).

Almost surely, 2^11720801 is an apocalyptic number.

It is an amenable number.

11720801 is a deficient number, since it is larger than the sum of its proper divisors (120931).

11720801 is an equidigital number, since it uses as much as digits as its factorization.

11720801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120930.

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 11720801 is about 3423.5655390251. The cubic root of 11720801 is about 227.1533245820.

It can be divided in two parts, 11720 and 801, that added together give a palindrome (12521).

The spelling of 11720801 in words is "eleven million, seven hundred twenty thousand, eight hundred one".