628051663 has 2 divisors, whose sum is σ = 628051664. Its totient is φ = 628051662.

The previous prime is 628051657. The next prime is 628051673. The reversal of 628051663 is 366150826.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 628051663 - 2¹⁷ = 627920591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628051673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314025831 + 314025832.

It is an arithmetic number, because the mean of its divisors is an integer number (314025832).

Almost surely, 2^628051663 is an apocalyptic number.

628051663 is a deficient number, since it is larger than the sum of its proper divisors (1).

628051663 is an equidigital number, since it uses as much as digits as its factorization.

628051663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 628051663 is about 25060.9589401523. The cubic root of 628051663 is about 856.3772534120.

The spelling of 628051663 in words is "six hundred twenty-eight million, fifty-one thousand, six hundred sixty-three".