628937 has 2 divisors, whose sum is σ = 628938. Its totient is φ = 628936.

The previous prime is 628921. The next prime is 628939. The reversal of 628937 is 739826.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 512656 + 116281 = 716^2 + 341^2 .

It is a cyclic number.

It is not a de Polignac number, because 628937 - 2⁴ = 628921 is a prime.

Together with 628939, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 628897 and 628906.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 628937.

It is not a weakly prime, because it can be changed into another prime (628939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314468 + 314469.

It is an arithmetic number, because the mean of its divisors is an integer number (314469).

2⁶²⁸⁹³⁷ is an apocalyptic number.

It is an amenable number.

628937 is a deficient number, since it is larger than the sum of its proper divisors (1).

628937 is an equidigital number, since it uses as much as digits as its factorization.

628937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 35.

The square root of 628937 is about 793.0554835571. The cubic root of 628937 is about 85.6779463683.

Subtracting 628937 from its reverse (739826), we obtain a square (110889 = 333²).

The spelling of 628937 in words is "six hundred twenty-eight thousand, nine hundred thirty-seven".