7683250721 has 2 divisors, whose sum is σ = 7683250722. Its totient is φ = 7683250720.

The previous prime is 7683250573. The next prime is 7683250741. The reversal of 7683250721 is 1270523867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4863109696 + 2820141025 = 69736^2 + 53105^2 .

It is a cyclic number.

It is not a de Polignac number, because 7683250721 - 2²⁶ = 7616141857 is a prime.

It is not a weakly prime, because it can be changed into another prime (7683250741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3841625360 + 3841625361.

It is an arithmetic number, because the mean of its divisors is an integer number (3841625361).

Almost surely, 2^7683250721 is an apocalyptic number.

It is an amenable number.

7683250721 is a deficient number, since it is larger than the sum of its proper divisors (1).

7683250721 is an equidigital number, since it uses as much as digits as its factorization.

7683250721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 7683250721 is about 87654.1540430344. The cubic root of 7683250721 is about 1973.2479871217.

The spelling of 7683250721 in words is "seven billion, six hundred eighty-three million, two hundred fifty thousand, seven hundred twenty-one".