628427 has 2 divisors, whose sum is σ = 628428. Its totient is φ = 628426.

The previous prime is 628423. The next prime is 628447. The reversal of 628427 is 724826.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 628427 - 2² = 628423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 628427.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 628427.

It is not a weakly prime, because it can be changed into another prime (628423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314213 + 314214.

It is an arithmetic number, because the mean of its divisors is an integer number (314214).

2⁶²⁸⁴²⁷ is an apocalyptic number.

628427 is a deficient number, since it is larger than the sum of its proper divisors (1).

628427 is an equidigital number, since it uses as much as digits as its factorization.

628427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 29.

The square root of 628427 is about 792.7338771618. The cubic root of 628427 is about 85.6547815845.

The spelling of 628427 in words is "six hundred twenty-eight thousand, four hundred twenty-seven".