628463617 has 2 divisors, whose sum is σ = 628463618. Its totient is φ = 628463616.

The previous prime is 628463603. The next prime is 628463629. The reversal of 628463617 is 716364826.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 355850496 + 272613121 = 18864^2 + 16511^2 .

It is a cyclic number.

It is not a de Polignac number, because 628463617 - 2⁷ = 628463489 is a prime.

It is not a weakly prime, because it can be changed into another prime (628463117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314231808 + 314231809.

It is an arithmetic number, because the mean of its divisors is an integer number (314231809).

Almost surely, 2^628463617 is an apocalyptic number.

It is an amenable number.

628463617 is a deficient number, since it is larger than the sum of its proper divisors (1).

628463617 is an equidigital number, since it uses as much as digits as its factorization.

628463617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 43.

The square root of 628463617 is about 25069.1766318721. The cubic root of 628463617 is about 856.5644518809.

The spelling of 628463617 in words is "six hundred twenty-eight million, four hundred sixty-three thousand, six hundred seventeen".