628762859 has 2 divisors, whose sum is σ = 628762860. Its totient is φ = 628762858.

The previous prime is 628762847. The next prime is 628762889. The reversal of 628762859 is 958267826.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 628762859 - 2¹² = 628758763 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 628762859.

It is not a weakly prime, because it can be changed into another prime (628762819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314381429 + 314381430.

It is an arithmetic number, because the mean of its divisors is an integer number (314381430).

Almost surely, 2^628762859 is an apocalyptic number.

628762859 is a deficient number, since it is larger than the sum of its proper divisors (1).

628762859 is an equidigital number, since it uses as much as digits as its factorization.

628762859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 53.

The square root of 628762859 is about 25075.1442468433. The cubic root of 628762859 is about 856.7003809314.

The spelling of 628762859 in words is "six hundred twenty-eight million, seven hundred sixty-two thousand, eight hundred fifty-nine".