656103 has 16 divisors (see below), whose sum is σ = 1011200. Its totient is φ = 370656.

The previous prime is 656077. The next prime is 656113. The reversal of 656103 is 301656.

It is not a de Polignac number, because 656103 - 2⁶ = 656039 is a prime.

It is a super-2 number, since 2×656103² = 860942293218, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 656103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3198 + ... + 3396.

It is an arithmetic number, because the mean of its divisors is an integer number (63200).

2⁶⁵⁶¹⁰³ is an apocalyptic number.

656103 is a deficient number, since it is larger than the sum of its proper divisors (355097).

656103 is a wasteful number, since it uses less digits than its factorization.

656103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 656103 is about 810.0018518497. The cubic root of 656103 is about 86.8941770545.

Adding to 656103 its reverse (301656), we get a palindrome (957759).

The spelling of 656103 in words is "six hundred fifty-six thousand, one hundred three".