11621305 has 4 divisors (see below), whose sum is σ = 13945572. Its totient is φ = 9297040.

The previous prime is 11621303. The next prime is 11621321. The reversal of 11621305 is 50312611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8456464 + 3164841 = 2908^2 + 1779^2 .

It is not a de Polignac number, because 11621305 - 2¹ = 11621303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11621303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1162126 + ... + 1162135.

It is an arithmetic number, because the mean of its divisors is an integer number (3486393).

Almost surely, 2^11621305 is an apocalyptic number.

It is an amenable number.

11621305 is a deficient number, since it is larger than the sum of its proper divisors (2324267).

11621305 is an equidigital number, since it uses as much as digits as its factorization.

11621305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324266.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 11621305 is about 3409.0035200921. The cubic root of 11621305 is about 226.5087411571.

Adding to 11621305 its reverse (50312611), we get a palindrome (61933916).

The spelling of 11621305 in words is "eleven million, six hundred twenty-one thousand, three hundred five".