628881727 has 2 divisors, whose sum is σ = 628881728. Its totient is φ = 628881726.

The previous prime is 628881707. The next prime is 628881763. The reversal of 628881727 is 727188826.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 628881727 - 2¹¹ = 628879679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628881707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314440863 + 314440864.

It is an arithmetic number, because the mean of its divisors is an integer number (314440864).

Almost surely, 2^628881727 is an apocalyptic number.

628881727 is a deficient number, since it is larger than the sum of its proper divisors (1).

628881727 is an equidigital number, since it uses as much as digits as its factorization.

628881727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 602112, while the sum is 49.

The square root of 628881727 is about 25077.5143704475. The cubic root of 628881727 is about 856.7543641053.

The spelling of 628881727 in words is "six hundred twenty-eight million, eight hundred eighty-one thousand, seven hundred twenty-seven".