628654297 has 2 divisors, whose sum is σ = 628654298. Its totient is φ = 628654296.

The previous prime is 628654249. The next prime is 628654303. The reversal of 628654297 is 792456826.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 385886736 + 242767561 = 19644^2 + 15581^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628654297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 628654297.

It is not a weakly prime, because it can be changed into another prime (628654097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314327148 + 314327149.

It is an arithmetic number, because the mean of its divisors is an integer number (314327149).

Almost surely, 2^628654297 is an apocalyptic number.

It is an amenable number.

628654297 is a deficient number, since it is larger than the sum of its proper divisors (1).

628654297 is an equidigital number, since it uses as much as digits as its factorization.

628654297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 49.

The square root of 628654297 is about 25072.9794200849. The cubic root of 628654297 is about 856.6510722195.

The spelling of 628654297 in words is "six hundred twenty-eight million, six hundred fifty-four thousand, two hundred ninety-seven".