7028640859 has 2 divisors, whose sum is σ = 7028640860. Its totient is φ = 7028640858.

The previous prime is 7028640799. The next prime is 7028640893. The reversal of 7028640859 is 9580468207.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7028640859 - 2²¹ = 7026543707 is a prime.

It is not a weakly prime, because it can be changed into another prime (7028640659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3514320429 + 3514320430.

It is an arithmetic number, because the mean of its divisors is an integer number (3514320430).

Almost surely, 2^7028640859 is an apocalyptic number.

7028640859 is a deficient number, since it is larger than the sum of its proper divisors (1).

7028640859 is an equidigital number, since it uses as much as digits as its factorization.

7028640859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 49.

The square root of 7028640859 is about 83836.9898016383. The cubic root of 7028640859 is about 1915.5365846317.

The spelling of 7028640859 in words is "seven billion, twenty-eight million, six hundred forty thousand, eight hundred fifty-nine".