628357 has 2 divisors, whose sum is σ = 628358. Its totient is φ = 628356.

The previous prime is 628319. The next prime is 628363. The reversal of 628357 is 753826.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 367236 + 261121 = 606^2 + 511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314178 + 314179.

It is an arithmetic number, because the mean of its divisors is an integer number (314179).

2⁶²⁸³⁵⁷ is an apocalyptic number.

It is an amenable number.

628357 is a deficient number, since it is larger than the sum of its proper divisors (1).

628357 is an equidigital number, since it uses as much as digits as its factorization.

628357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 628357 is about 792.6897249239. The cubic root of 628357 is about 85.6516011263.

The spelling of 628357 in words is "six hundred twenty-eight thousand, three hundred fifty-seven".