628866727 has 2 divisors, whose sum is σ = 628866728. Its totient is φ = 628866726.

The previous prime is 628866709. The next prime is 628866773. The reversal of 628866727 is 727668826.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 628866727 - 2²³ = 620478119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628846727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314433363 + 314433364.

It is an arithmetic number, because the mean of its divisors is an integer number (314433364).

Almost surely, 2^628866727 is an apocalyptic number.

628866727 is a deficient number, since it is larger than the sum of its proper divisors (1).

628866727 is an equidigital number, since it uses as much as digits as its factorization.

628866727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2709504, while the sum is 52.

The square root of 628866727 is about 25077.2152959614. The cubic root of 628866727 is about 856.7475523223.

The spelling of 628866727 in words is "six hundred twenty-eight million, eight hundred sixty-six thousand, seven hundred twenty-seven".