628117673 has 2 divisors, whose sum is σ = 628117674. Its totient is φ = 628117672.

The previous prime is 628117657. The next prime is 628117733. The reversal of 628117673 is 376711826.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 603783184 + 24334489 = 24572^2 + 4933^2 .

It is a cyclic number.

It is not a de Polignac number, because 628117673 - 2⁴ = 628117657 is a prime.

It is a super-2 number, since 2×628117673² = 789063622269869858, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 628117673.

It is not a weakly prime, because it can be changed into another prime (628117643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314058836 + 314058837.

It is an arithmetic number, because the mean of its divisors is an integer number (314058837).

Almost surely, 2^628117673 is an apocalyptic number.

It is an amenable number.

628117673 is a deficient number, since it is larger than the sum of its proper divisors (1).

628117673 is an equidigital number, since it uses as much as digits as its factorization.

628117673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 41.

The square root of 628117673 is about 25062.2758942599. The cubic root of 628117673 is about 856.4072549153.

The spelling of 628117673 in words is "six hundred twenty-eight million, one hundred seventeen thousand, six hundred seventy-three".