628117 has 8 divisors (see below), whose sum is σ = 730112. Its totient is φ = 529200.

The previous prime is 628097. The next prime is 628127. The reversal of 628117 is 711826.

628117 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 de Polignac number, because none of the positive numbers 2^k-628117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 628091 and 628100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628127) 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, 309 + ... + 1162.

It is an arithmetic number, because the mean of its divisors is an integer number (91264).

2⁶²⁸¹¹⁷ is an apocalyptic number.

It is an amenable number.

628117 is a deficient number, since it is larger than the sum of its proper divisors (101995).

628117 is a wasteful number, since it uses less digits than its factorization.

628117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539.

The product of its digits is 672, while the sum is 25.

The square root of 628117 is about 792.5383271489. The cubic root of 628117 is about 85.6406949048.

The spelling of 628117 in words is "six hundred twenty-eight thousand, one hundred seventeen".