628814602817 has 2 divisors, whose sum is σ = 628814602818. Its totient is φ = 628814602816.

The previous prime is 628814602813. The next prime is 628814602883. The reversal of 628814602817 is 718206418826.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 544667616256 + 84146986561 = 738016^2 + 290081^2 .

It is a cyclic number.

It is not a de Polignac number, because 628814602817 - 2² = 628814602813 is a prime.

It is not a weakly prime, because it can be changed into another prime (628814602813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314407301408 + 314407301409.

It is an arithmetic number, because the mean of its divisors is an integer number (314407301409).

Almost surely, 2^628814602817 is an apocalyptic number.

It is an amenable number.

628814602817 is a deficient number, since it is larger than the sum of its proper divisors (1).

628814602817 is an equidigital number, since it uses as much as digits as its factorization.

628814602817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2064384, while the sum is 53.

The spelling of 628814602817 in words is "six hundred twenty-eight billion, eight hundred fourteen million, six hundred two thousand, eight hundred seventeen".