628613 has 8 divisors (see below), whose sum is σ = 663936. Its totient is φ = 594000.

The previous prime is 628591. The next prime is 628651. The reversal of 628613 is 316826.

628613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 628613 - 2⁸ = 628357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3383 + ... + 3563.

It is an arithmetic number, because the mean of its divisors is an integer number (82992).

2⁶²⁸⁶¹³ is an apocalyptic number.

It is an amenable number.

628613 is a deficient number, since it is larger than the sum of its proper divisors (35323).

628613 is a wasteful number, since it uses less digits than its factorization.

628613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355.

The product of its digits is 1728, while the sum is 26.

The square root of 628613 is about 792.8511840188. The cubic root of 628613 is about 85.6632313688.

It can be divided in two parts, 6286 and 13, that multiplied together give a palindrome (81718).

The spelling of 628613 in words is "six hundred twenty-eight thousand, six hundred thirteen".