628488437 has 2 divisors, whose sum is σ = 628488438. Its totient is φ = 628488436.

The previous prime is 628488431. The next prime is 628488457. The reversal of 628488437 is 734884826.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 328298161 + 300190276 = 18119^2 + 17326^2 .

It is a cyclic number.

It is not a de Polignac number, because 628488437 - 2¹² = 628484341 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628488431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314244218 + 314244219.

It is an arithmetic number, because the mean of its divisors is an integer number (314244219).

Almost surely, 2^628488437 is an apocalyptic number.

It is an amenable number.

628488437 is a deficient number, since it is larger than the sum of its proper divisors (1).

628488437 is an equidigital number, since it uses as much as digits as its factorization.

628488437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2064384, while the sum is 50.

The square root of 628488437 is about 25069.6716572036. The cubic root of 628488437 is about 856.5757278716.

The spelling of 628488437 in words is "six hundred twenty-eight million, four hundred eighty-eight thousand, four hundred thirty-seven".