628941 has 4 divisors (see below), whose sum is σ = 838592. Its totient is φ = 419292.

The previous prime is 628939. The next prime is 628973. The reversal of 628941 is 149826.

628941 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.

It is not a de Polignac number, because 628941 - 2¹ = 628939 is a prime.

It is a super-4 number, since 4×628941⁴ (a number of 24 digits) contains 4444 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 628899 and 628908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628921) 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, 104821 + ... + 104826.

It is an arithmetic number, because the mean of its divisors is an integer number (209648).

2⁶²⁸⁹⁴¹ is an apocalyptic number.

It is an amenable number.

628941 is a deficient number, since it is larger than the sum of its proper divisors (209651).

628941 is a wasteful number, since it uses less digits than its factorization.

628941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209650.

The product of its digits is 3456, while the sum is 30.

The square root of 628941 is about 793.0580054447. The cubic root of 628941 is about 85.6781280033.

The spelling of 628941 in words is "six hundred twenty-eight thousand, nine hundred forty-one".