8921764 has 12 divisors (see below), whose sum is σ = 15994188. Its totient is φ = 4352000.

The previous prime is 8921761. The next prime is 8921771. The reversal of 8921764 is 4671298.

It can be written as a sum of positive squares in 2 ways, for example, as 2958400 + 5963364 = 1720^2 + 2442^2 .

It is not an unprimeable number, because it can be changed into a prime (8921761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27037 + ... + 27364.

It is an arithmetic number, because the mean of its divisors is an integer number (1332849).

Almost surely, 2^8921764 is an apocalyptic number.

It is an amenable number.

8921764 is a deficient number, since it is larger than the sum of its proper divisors (7072424).

8921764 is a wasteful number, since it uses less digits than its factorization.

8921764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54446 (or 54444 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 8921764 is about 2986.9322054576. The cubic root of 8921764 is about 207.4038960778.

The spelling of 8921764 in words is "eight million, nine hundred twenty-one thousand, seven hundred sixty-four".