628251427 has 2 divisors, whose sum is σ = 628251428. Its totient is φ = 628251426.

The previous prime is 628251419. The next prime is 628251467. The reversal of 628251427 is 724152826.

It is a happy number.

628251427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 628251427 - 2³ = 628251419 is a prime.

It is not a weakly prime, because it can be changed into another prime (628251467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314125713 + 314125714.

It is an arithmetic number, because the mean of its divisors is an integer number (314125714).

Almost surely, 2^628251427 is an apocalyptic number.

628251427 is a deficient number, since it is larger than the sum of its proper divisors (1).

628251427 is an equidigital number, since it uses as much as digits as its factorization.

628251427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 37.

The square root of 628251427 is about 25064.9441850565. The cubic root of 628251427 is about 856.4680395798.

The spelling of 628251427 in words is "six hundred twenty-eight million, two hundred fifty-one thousand, four hundred twenty-seven".