628611 has 8 divisors (see below), whose sum is σ = 842064. Its totient is φ = 417120.

The previous prime is 628591. The next prime is 628651. The reversal of 628611 is 116826.

628611 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 not a de Polignac number, because 628611 - 2⁶ = 628547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628651) 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, 621 + ... + 1281.

It is an arithmetic number, because the mean of its divisors is an integer number (105258).

2⁶²⁸⁶¹¹ is an apocalyptic number.

628611 is a deficient number, since it is larger than the sum of its proper divisors (213453).

628611 is a wasteful number, since it uses less digits than its factorization.

628611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981.

The product of its digits is 576, while the sum is 24.

The square root of 628611 is about 792.8499227470. The cubic root of 628611 is about 85.6631405198.

The spelling of 628611 in words is "six hundred twenty-eight thousand, six hundred eleven".