7028640893 has 2 divisors, whose sum is σ = 7028640894. Its totient is φ = 7028640892.

The previous prime is 7028640859. The next prime is 7028640907. The reversal of 7028640893 is 3980468207.

7028640893 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3814544644 + 3214096249 = 61762^2 + 56693^2 .

It is an emirp because it is prime and its reverse (3980468207) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7028640893 - 2¹⁰ = 7028639869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7028630893) 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, 3514320446 + 3514320447.

It is an arithmetic number, because the mean of its divisors is an integer number (3514320447).

Almost surely, 2^7028640893 is an apocalyptic number.

It is an amenable number.

7028640893 is a deficient number, since it is larger than the sum of its proper divisors (1).

7028640893 is an equidigital number, since it uses as much as digits as its factorization.

7028640893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 7028640893 is about 83836.9900044127. The cubic root of 7028640893 is about 1915.5365877204.

The spelling of 7028640893 in words is "seven billion, twenty-eight million, six hundred forty thousand, eight hundred ninety-three".