628916 has 6 divisors (see below), whose sum is σ = 1100610. Its totient is φ = 314456.

The previous prime is 628913. The next prime is 628921. The reversal of 628916 is 619826.

It can be written as a sum of positive squares in only one way, i.e., 417316 + 211600 = 646^2 + 460^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78611 + ... + 78618.

It is an arithmetic number, because the mean of its divisors is an integer number (183435).

2⁶²⁸⁹¹⁶ is an apocalyptic number.

It is an amenable number.

628916 is a deficient number, since it is larger than the sum of its proper divisors (471694).

628916 is a wasteful number, since it uses less digits than its factorization.

628916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157233 (or 157231 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 628916 is about 793.0422435154. The cubic root of 628916 is about 85.6769927715.

The spelling of 628916 in words is "six hundred twenty-eight thousand, nine hundred sixteen".