654559 has 4 divisors (see below), whose sum is σ = 677160. Its totient is φ = 631960.

The previous prime is 654553. The next prime is 654571. The reversal of 654559 is 955456.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 654559 - 2⁵ = 654527 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 (654553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11257 + ... + 11314.

It is an arithmetic number, because the mean of its divisors is an integer number (169290).

2⁶⁵⁴⁵⁵⁹ is an apocalyptic number.

654559 is a deficient number, since it is larger than the sum of its proper divisors (22601).

654559 is a wasteful number, since it uses less digits than its factorization.

654559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22600.

The product of its digits is 27000, while the sum is 34.

The square root of 654559 is about 809.0482062275. The cubic root of 654559 is about 86.8259611444.

It can be divided in two parts, 65 and 4559, that added together give a square (4624 = 68²).

The spelling of 654559 in words is "six hundred fifty-four thousand, five hundred fifty-nine".