7629075721 has 2 divisors, whose sum is σ = 7629075722. Its totient is φ = 7629075720.

The previous prime is 7629075691. The next prime is 7629075731. The reversal of 7629075721 is 1275709267.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7056000000 + 573075721 = 84000^2 + 23939^2 .

It is a cyclic number.

It is not a de Polignac number, because 7629075721 - 2¹⁷ = 7628944649 is a prime.

It is not a weakly prime, because it can be changed into another prime (7629075731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3814537860 + 3814537861.

It is an arithmetic number, because the mean of its divisors is an integer number (3814537861).

Almost surely, 2^7629075721 is an apocalyptic number.

It is an amenable number.

7629075721 is a deficient number, since it is larger than the sum of its proper divisors (1).

7629075721 is an equidigital number, since it uses as much as digits as its factorization.

7629075721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 370440, while the sum is 46.

The square root of 7629075721 is about 87344.5803756593. The cubic root of 7629075721 is about 1968.5992190146.

The spelling of 7629075721 in words is "seven billion, six hundred twenty-nine million, seventy-five thousand, seven hundred twenty-one".