655673 has 4 divisors (see below), whose sum is σ = 694260. Its totient is φ = 617088.

The previous prime is 655657. The next prime is 655687. The reversal of 655673 is 376556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 473344 + 182329 = 688^2 + 427^2 .

It is a cyclic number.

It is not a de Polignac number, because 655673 - 2⁴ = 655657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19268 + ... + 19301.

It is an arithmetic number, because the mean of its divisors is an integer number (173565).

2⁶⁵⁵⁶⁷³ is an apocalyptic number.

It is an amenable number.

655673 is a deficient number, since it is larger than the sum of its proper divisors (38587).

655673 is a wasteful number, since it uses less digits than its factorization.

655673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38586.

The product of its digits is 18900, while the sum is 32.

The square root of 655673 is about 809.7363768536. The cubic root of 655673 is about 86.8751898621.

The spelling of 655673 in words is "six hundred fifty-five thousand, six hundred seventy-three".