628735853 has 2 divisors, whose sum is σ = 628735854. Its totient is φ = 628735852.

The previous prime is 628735819. The next prime is 628735883. The reversal of 628735853 is 358537826.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 595994569 + 32741284 = 24413^2 + 5722^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628735853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 628735798 and 628735807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628735813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314367926 + 314367927.

It is an arithmetic number, because the mean of its divisors is an integer number (314367927).

Almost surely, 2^628735853 is an apocalyptic number.

It is an amenable number.

628735853 is a deficient number, since it is larger than the sum of its proper divisors (1).

628735853 is an equidigital number, since it uses as much as digits as its factorization.

628735853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 47.

The square root of 628735853 is about 25074.6057396722. The cubic root of 628735853 is about 856.6881153736.

The spelling of 628735853 in words is "six hundred twenty-eight million, seven hundred thirty-five thousand, eight hundred fifty-three".