628349 has 4 divisors (see below), whose sum is σ = 661440. Its totient is φ = 595260.

The previous prime is 628319. The next prime is 628357. The reversal of 628349 is 943826.

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.

It is a cyclic number.

It is not a de Polignac number, because 628349 - 2⁸ = 628093 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 (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, 16517 + ... + 16554.

It is an arithmetic number, because the mean of its divisors is an integer number (165360).

2⁶²⁸³⁴⁹ is an apocalyptic number.

It is an amenable number.

628349 is a deficient number, since it is larger than the sum of its proper divisors (33091).

628349 is a wasteful number, since it uses less digits than its factorization.

628349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33090.

The product of its digits is 10368, while the sum is 32.

The square root of 628349 is about 792.6846787973. The cubic root of 628349 is about 85.6512376304.

The spelling of 628349 in words is "six hundred twenty-eight thousand, three hundred forty-nine".