628750273 has 2 divisors, whose sum is σ = 628750274. Its totient is φ = 628750272.

The previous prime is 628750271. The next prime is 628750319. The reversal of 628750273 is 372057826.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 360544144 + 268206129 = 18988^2 + 16377^2 .

It is a cyclic number.

It is not a de Polignac number, because 628750273 - 2¹ = 628750271 is a prime.

Together with 628750271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (628750271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314375136 + 314375137.

It is an arithmetic number, because the mean of its divisors is an integer number (314375137).

Almost surely, 2^628750273 is an apocalyptic number.

It is an amenable number.

628750273 is a deficient number, since it is larger than the sum of its proper divisors (1).

628750273 is an equidigital number, since it uses as much as digits as its factorization.

628750273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 628750273 is about 25074.8932799324. The cubic root of 628750273 is about 856.6946646783.

The spelling of 628750273 in words is "six hundred twenty-eight million, seven hundred fifty thousand, two hundred seventy-three".