628487 has 2 divisors, whose sum is σ = 628488. Its totient is φ = 628486.

The previous prime is 628477. The next prime is 628493. The reversal of 628487 is 784826.

628487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 628487 - 2⁶ = 628423 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 628487.

It is not a weakly prime, because it can be changed into another prime (628427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314243 + 314244.

It is an arithmetic number, because the mean of its divisors is an integer number (314244).

2⁶²⁸⁴⁸⁷ is an apocalyptic number.

628487 is a deficient number, since it is larger than the sum of its proper divisors (1).

628487 is an equidigital number, since it uses as much as digits as its factorization.

628487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 35.

The square root of 628487 is about 792.7717199800. The cubic root of 628487 is about 85.6575075035.

The spelling of 628487 in words is "six hundred twenty-eight thousand, four hundred eighty-seven".