8923240561 has 2 divisors, whose sum is σ = 8923240562. Its totient is φ = 8923240560.

The previous prime is 8923240553. The next prime is 8923240597. The reversal of 8923240561 is 1650423298.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6822760000 + 2100480561 = 82600^2 + 45831^2 .

It is a cyclic number.

It is not a de Polignac number, because 8923240561 - 2³ = 8923240553 is a prime.

It is not a weakly prime, because it can be changed into another prime (8923246561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4461620280 + 4461620281.

It is an arithmetic number, because the mean of its divisors is an integer number (4461620281).

Almost surely, 2^8923240561 is an apocalyptic number.

It is an amenable number.

8923240561 is a deficient number, since it is larger than the sum of its proper divisors (1).

8923240561 is an equidigital number, since it uses as much as digits as its factorization.

8923240561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 8923240561 is about 94462.9057408251. The cubic root of 8923240561 is about 2074.1533729844.

The spelling of 8923240561 in words is "eight billion, nine hundred twenty-three million, two hundred forty thousand, five hundred sixty-one".