654973 has 6 divisors (see below), whose sum is σ = 720062. Its totient is φ = 595320.

The previous prime is 654967. The next prime is 654991. The reversal of 654973 is 379456.

It can be written as a sum of positive squares in only one way, i.e., 480249 + 174724 = 693^2 + 418^2 .

It is not a de Polignac number, because 654973 - 2¹³ = 646781 is a prime.

It is a Duffinian number.

654973 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2586 + ... + 2827.

2⁶⁵⁴⁹⁷³ is an apocalyptic number.

It is an amenable number.

654973 is a deficient number, since it is larger than the sum of its proper divisors (65089).

654973 is a wasteful number, since it uses less digits than its factorization.

654973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5435 (or 5424 counting only the distinct ones).

The product of its digits is 22680, while the sum is 34.

The square root of 654973 is about 809.3040219843. The cubic root of 654973 is about 86.8442627144.

The spelling of 654973 in words is "six hundred fifty-four thousand, nine hundred seventy-three".