7628798213 has 2 divisors, whose sum is σ = 7628798214. Its totient is φ = 7628798212.

The previous prime is 7628798207. The next prime is 7628798227. The reversal of 7628798213 is 3128978267.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7609596289 + 19201924 = 87233^2 + 4382^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7628798213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7628794213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3814399106 + 3814399107.

It is an arithmetic number, because the mean of its divisors is an integer number (3814399107).

Almost surely, 2^7628798213 is an apocalyptic number.

It is an amenable number.

7628798213 is a deficient number, since it is larger than the sum of its proper divisors (1).

7628798213 is an equidigital number, since it uses as much as digits as its factorization.

7628798213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 53.

The square root of 7628798213 is about 87342.9917795355. The cubic root of 7628798213 is about 1968.5753494278.

The spelling of 7628798213 in words is "seven billion, six hundred twenty-eight million, seven hundred ninety-eight thousand, two hundred thirteen".