8813641 has 4 divisors (see below), whose sum is σ = 9097984. Its totient is φ = 8529300.

The previous prime is 8813639. The next prime is 8813653. The reversal of 8813641 is 1463188.

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 not a de Polignac number, because 8813641 - 2¹ = 8813639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 284311 = 8813641 / (8 + 8 + 1 + 3 + 6 + 4 + 1).

It is a Duffinian number.

8813641 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8813671) 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, 142125 + ... + 142186.

It is an arithmetic number, because the mean of its divisors is an integer number (2274496).

Almost surely, 2^8813641 is an apocalyptic number.

It is an amenable number.

8813641 is a deficient number, since it is larger than the sum of its proper divisors (284343).

8813641 is a wasteful number, since it uses less digits than its factorization.

8813641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284342.

The product of its digits is 4608, while the sum is 31.

The square root of 8813641 is about 2968.7776946077. Note that the first 3 decimals coincide. The cubic root of 8813641 is about 206.5626447839.

The spelling of 8813641 in words is "eight million, eight hundred thirteen thousand, six hundred forty-one".