628462271 has 2 divisors, whose sum is σ = 628462272. Its totient is φ = 628462270.

The previous prime is 628462223. The next prime is 628462283. The reversal of 628462271 is 172264826.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628462271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628422271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314231135 + 314231136.

It is an arithmetic number, because the mean of its divisors is an integer number (314231136).

Almost surely, 2^628462271 is an apocalyptic number.

628462271 is a deficient number, since it is larger than the sum of its proper divisors (1).

628462271 is an equidigital number, since it uses as much as digits as its factorization.

628462271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 38.

The square root of 628462271 is about 25069.1497861415. The cubic root of 628462271 is about 856.5638403702.

The spelling of 628462271 in words is "six hundred twenty-eight million, four hundred sixty-two thousand, two hundred seventy-one".