8921250761 has 2 divisors, whose sum is σ = 8921250762. Its totient is φ = 8921250760.

The previous prime is 8921250757. The next prime is 8921250791. The reversal of 8921250761 is 1670521298.

8921250761 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8715156025 + 206094736 = 93355^2 + 14356^2 .

It is a cyclic number.

It is not a de Polignac number, because 8921250761 - 2² = 8921250757 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (8921250731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4460625380 + 4460625381.

It is an arithmetic number, because the mean of its divisors is an integer number (4460625381).

Almost surely, 2^8921250761 is an apocalyptic number.

It is an amenable number.

8921250761 is a deficient number, since it is larger than the sum of its proper divisors (1).

8921250761 is an equidigital number, since it uses as much as digits as its factorization.

8921250761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 8921250761 is about 94452.3729770724. The cubic root of 8921250761 is about 2073.9991891927. Note that the first 3 decimals are identical.

The spelling of 8921250761 in words is "eight billion, nine hundred twenty-one million, two hundred fifty thousand, seven hundred sixty-one".