656673 has 16 divisors (see below), whose sum is σ = 946176. Its totient is φ = 403920.

The previous prime is 656671. The next prime is 656681. The reversal of 656673 is 376656.

It is not a de Polignac number, because 656673 - 2¹ = 656671 is a prime.

It is not an unprimeable number, because it can be changed into a prime (656671) 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, 1986 + ... + 2292.

It is an arithmetic number, because the mean of its divisors is an integer number (59136).

2⁶⁵⁶⁶⁷³ is an apocalyptic number.

It is an amenable number.

656673 is a deficient number, since it is larger than the sum of its proper divisors (289503).

656673 is a wasteful number, since it uses less digits than its factorization.

656673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364.

The product of its digits is 22680, while the sum is 33.

The square root of 656673 is about 810.3536265113. The cubic root of 656673 is about 86.9193333408.

The spelling of 656673 in words is "six hundred fifty-six thousand, six hundred seventy-three".