8764621 has 2 divisors, whose sum is σ = 8764622. Its totient is φ = 8764620.

The previous prime is 8764601. The next prime is 8764687. The reversal of 8764621 is 1264678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7214596 + 1550025 = 2686^2 + 1245^2 .

It is a cyclic number.

It is not a de Polignac number, because 8764621 - 2⁵ = 8764589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8764601) 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, 4382310 + 4382311.

It is an arithmetic number, because the mean of its divisors is an integer number (4382311).

Almost surely, 2^8764621 is an apocalyptic number.

It is an amenable number.

8764621 is a deficient number, since it is larger than the sum of its proper divisors (1).

8764621 is an equidigital number, since it uses as much as digits as its factorization.

8764621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 34.

The square root of 8764621 is about 2960.5102600734. The cubic root of 8764621 is about 206.1789769537.

The spelling of 8764621 in words is "eight million, seven hundred sixty-four thousand, six hundred twenty-one".