628759903 has 2 divisors, whose sum is σ = 628759904. Its totient is φ = 628759902.

The previous prime is 628759897. The next prime is 628759921. The reversal of 628759903 is 309957826.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628759903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (629759903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314379951 + 314379952.

It is an arithmetic number, because the mean of its divisors is an integer number (314379952).

Almost surely, 2^628759903 is an apocalyptic number.

628759903 is a deficient number, since it is larger than the sum of its proper divisors (1).

628759903 is an equidigital number, since it uses as much as digits as its factorization.

628759903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 628759903 is about 25075.0853039426. The cubic root of 628759903 is about 856.6990383955.

The spelling of 628759903 in words is "six hundred twenty-eight million, seven hundred fifty-nine thousand, nine hundred three".