628199027 has 2 divisors, whose sum is σ = 628199028. Its totient is φ = 628199026.

The previous prime is 628198969. The next prime is 628199059. The reversal of 628199027 is 720991826.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628199027 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (628199087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314099513 + 314099514.

It is an arithmetic number, because the mean of its divisors is an integer number (314099514).

Almost surely, 2^628199027 is an apocalyptic number.

628199027 is a deficient number, since it is larger than the sum of its proper divisors (1).

628199027 is an equidigital number, since it uses as much as digits as its factorization.

628199027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 628199027 is about 25063.8988786661. The cubic root of 628199027 is about 856.4442273654. Note that the first 3 decimals are identical.

The spelling of 628199027 in words is "six hundred twenty-eight million, one hundred ninety-nine thousand, twenty-seven".