628313 has 4 divisors (see below), whose sum is σ = 718080. Its totient is φ = 538548.

The previous prime is 628301. The next prime is 628319. The reversal of 628313 is 313826.

628313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 313826 = 2 ⋅156913.

It is a cyclic number.

It is not a de Polignac number, because 628313 - 2⁸ = 628057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44873 + ... + 44886.

It is an arithmetic number, because the mean of its divisors is an integer number (179520).

2⁶²⁸³¹³ is an apocalyptic number.

It is an amenable number.

628313 is a deficient number, since it is larger than the sum of its proper divisors (89767).

628313 is an equidigital number, since it uses as much as digits as its factorization.

628313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89766.

The product of its digits is 864, while the sum is 23.

The square root of 628313 is about 792.6619708299. The cubic root of 628313 is about 85.6496018603.

The spelling of 628313 in words is "six hundred twenty-eight thousand, three hundred thirteen".