8763121 has 2 divisors, whose sum is σ = 8763122. Its totient is φ = 8763120.

The previous prime is 8763119. The next prime is 8763187. The reversal of 8763121 is 1213678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8761600 + 1521 = 2960^2 + 39^2 .

It is a cyclic number.

It is not a de Polignac number, because 8763121 - 2¹ = 8763119 is a prime.

Together with 8763119, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8763121.

It is not a weakly prime, because it can be changed into another prime (8763101) 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 as a sum of consecutive naturals, namely, 4381560 + 4381561.

It is an arithmetic number, because the mean of its divisors is an integer number (4381561).

Almost surely, 2^8763121 is an apocalyptic number.

It is an amenable number.

8763121 is a deficient number, since it is larger than the sum of its proper divisors (1).

8763121 is an equidigital number, since it uses as much as digits as its factorization.

8763121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 28.

The square root of 8763121 is about 2960.2569145262. The cubic root of 8763121 is about 206.1672142808.

Adding to 8763121 its reverse (1213678), we get a palindrome (9976799).

The spelling of 8763121 in words is "eight million, seven hundred sixty-three thousand, one hundred twenty-one".