626489 has 2 divisors, whose sum is σ = 626490. Its totient is φ = 626488.

The previous prime is 626477. The next prime is 626519. The reversal of 626489 is 984626.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 466489 + 160000 = 683^2 + 400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-626489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (626189) 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, 313244 + 313245.

It is an arithmetic number, because the mean of its divisors is an integer number (313245).

2⁶²⁶⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

626489 is a deficient number, since it is larger than the sum of its proper divisors (1).

626489 is an equidigital number, since it uses as much as digits as its factorization.

626489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 35.

The square root of 626489 is about 791.5105811043. The cubic root of 626489 is about 85.5666409304.

The spelling of 626489 in words is "six hundred twenty-six thousand, four hundred eighty-nine".