656017 has 4 divisors (see below), whose sum is σ = 662256. Its totient is φ = 649780.

The previous prime is 655987. The next prime is 656023. The reversal of 656017 is 710656.

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 656017 - 2¹¹ = 653969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 655982 and 656000.

It is not an unprimeable number, because it can be changed into a prime (656077) 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, 2959 + ... + 3172.

It is an arithmetic number, because the mean of its divisors is an integer number (165564).

2⁶⁵⁶⁰¹⁷ is an apocalyptic number.

It is an amenable number.

656017 is a deficient number, since it is larger than the sum of its proper divisors (6239).

656017 is a wasteful number, since it uses less digits than its factorization.

656017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6238.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 656017 is about 809.9487638116. The cubic root of 656017 is about 86.8903802799.

The spelling of 656017 in words is "six hundred fifty-six thousand, seventeen".