654469 has 4 divisors (see below), whose sum is σ = 665260. Its totient is φ = 643680.

The previous prime is 654439. The next prime is 654491. The reversal of 654469 is 964456.

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 216225 + 438244 = 465^2 + 662^2 .

It is a cyclic number.

It is not a de Polignac number, because 654469 - 2¹⁵ = 621701 is a prime.

It is a super-2 number, since 2×654469² = 856659343922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5304 + ... + 5425.

It is an arithmetic number, because the mean of its divisors is an integer number (166315).

2⁶⁵⁴⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

654469 is a deficient number, since it is larger than the sum of its proper divisors (10791).

654469 is a wasteful number, since it uses less digits than its factorization.

654469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10790.

The product of its digits is 25920, while the sum is 34.

The square root of 654469 is about 808.9925834023. The cubic root of 654469 is about 86.8219815211.

The spelling of 654469 in words is "six hundred fifty-four thousand, four hundred sixty-nine".