628614697 has 2 divisors, whose sum is σ = 628614698. Its totient is φ = 628614696.

The previous prime is 628614689. The next prime is 628614713. The reversal of 628614697 is 796416826.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 552297001 + 76317696 = 23501^2 + 8736^2 .

It is a cyclic number.

It is not a de Polignac number, because 628614697 - 2³ = 628614689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 628614697.

It is not a weakly prime, because it can be changed into another prime (628614647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314307348 + 314307349.

It is an arithmetic number, because the mean of its divisors is an integer number (314307349).

Almost surely, 2^628614697 is an apocalyptic number.

It is an amenable number.

628614697 is a deficient number, since it is larger than the sum of its proper divisors (1).

628614697 is an equidigital number, since it uses as much as digits as its factorization.

628614697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 49.

The square root of 628614697 is about 25072.1897129070. The cubic root of 628614697 is about 856.6330845407.

The spelling of 628614697 in words is "six hundred twenty-eight million, six hundred fourteen thousand, six hundred ninety-seven".