628253273 has 2 divisors, whose sum is σ = 628253274. Its totient is φ = 628253272.

The previous prime is 628253243. The next prime is 628253281. The reversal of 628253273 is 372352826.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 556393744 + 71859529 = 23588^2 + 8477^2 .

It is a cyclic number.

It is not a de Polignac number, because 628253273 - 2¹² = 628249177 is a prime.

It is not a weakly prime, because it can be changed into another prime (628253203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314126636 + 314126637.

It is an arithmetic number, because the mean of its divisors is an integer number (314126637).

Almost surely, 2^628253273 is an apocalyptic number.

It is an amenable number.

628253273 is a deficient number, since it is larger than the sum of its proper divisors (1).

628253273 is an equidigital number, since it uses as much as digits as its factorization.

628253273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 38.

The square root of 628253273 is about 25064.9810093684. The cubic root of 628253273 is about 856.4688784364.

The spelling of 628253273 in words is "six hundred twenty-eight million, two hundred fifty-three thousand, two hundred seventy-three".