628049 has 2 divisors, whose sum is σ = 628050. Its totient is φ = 628048.

The previous prime is 628037. The next prime is 628051. The reversal of 628049 is 940826.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 462400 + 165649 = 680^2 + 407^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628049 is a prime.

Together with 628051, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (622049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314024 + 314025.

It is an arithmetic number, because the mean of its divisors is an integer number (314025).

2⁶²⁸⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

628049 is a deficient number, since it is larger than the sum of its proper divisors (1).

628049 is an equidigital number, since it uses as much as digits as its factorization.

628049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 628049 is about 792.4954258543. The cubic root of 628049 is about 85.6376043036.

It can be divided in two parts, 6280 and 49, that multiplied together give a triangular number (307720 = T₇₈₄).

The spelling of 628049 in words is "six hundred twenty-eight thousand, forty-nine".