7075404821 has 2 divisors, whose sum is σ = 7075404822. Its totient is φ = 7075404820.

The previous prime is 7075404799. The next prime is 7075404881. The reversal of 7075404821 is 1284045707.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5305519921 + 1769884900 = 72839^2 + 42070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7075404821 is a prime.

It is a super-2 number, since 2×7075404821² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7075404881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3537702410 + 3537702411.

It is an arithmetic number, because the mean of its divisors is an integer number (3537702411).

Almost surely, 2^7075404821 is an apocalyptic number.

It is an amenable number.

7075404821 is a deficient number, since it is larger than the sum of its proper divisors (1).

7075404821 is an equidigital number, since it uses as much as digits as its factorization.

7075404821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 7075404821 is about 84115.4255829452. The cubic root of 7075404821 is about 1919.7754385984.

The spelling of 7075404821 in words is "seven billion, seventy-five million, four hundred four thousand, eight hundred twenty-one".