8613121 has 4 divisors (see below), whose sum is σ = 9396144. Its totient is φ = 7830100.

The previous prime is 8613107. The next prime is 8613127. The reversal of 8613121 is 1213168.

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 8613121 - 2⁵ = 8613089 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8613092 and 8613101.

It is not an unprimeable number, because it can be changed into a prime (8613127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391495 + ... + 391516.

It is an arithmetic number, because the mean of its divisors is an integer number (2349036).

Almost surely, 2^8613121 is an apocalyptic number.

It is an amenable number.

8613121 is a deficient number, since it is larger than the sum of its proper divisors (783023).

8613121 is a wasteful number, since it uses less digits than its factorization.

8613121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783022.

The product of its digits is 288, while the sum is 22.

The square root of 8613121 is about 2934.8119190163. The cubic root of 8613121 is about 204.9841034669.

Adding to 8613121 its reverse (1213168), we get a palindrome (9826289).

The spelling of 8613121 in words is "eight million, six hundred thirteen thousand, one hundred twenty-one".