11621845 has 8 divisors (see below), whose sum is σ = 13995576. Its totient is φ = 9264576.

The previous prime is 11621843. The next prime is 11621873. The reversal of 11621845 is 54812611.

It can be written as a sum of positive squares in 4 ways, for example, as 2537649 + 9084196 = 1593^2 + 3014^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11621845 - 2¹ = 11621843 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621843) 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 7 ways as a sum of consecutive naturals, for example, 2502 + ... + 5431.

It is an arithmetic number, because the mean of its divisors is an integer number (1749447).

Almost surely, 2^11621845 is an apocalyptic number.

It is an amenable number.

11621845 is a deficient number, since it is larger than the sum of its proper divisors (2373731).

11621845 is an equidigital number, since it uses as much as digits as its factorization.

11621845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8231.

The product of its digits is 1920, while the sum is 28.

The square root of 11621845 is about 3409.0827212023. The cubic root of 11621845 is about 226.5122494500.

The spelling of 11621845 in words is "eleven million, six hundred twenty-one thousand, eight hundred forty-five".