654433 has 4 divisors (see below), whose sum is σ = 704788. Its totient is φ = 604080.

The previous prime is 654427. The next prime is 654439. The reversal of 654433 is 334456.

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

It is an interprime number because it is at equal distance from previous prime (654427) and next prime (654439).

It can be written as a sum of positive squares in 2 ways, for example, as 222784 + 431649 = 472^2 + 657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-654433 is a prime.

It is a d-powerful number, because it can be written as 6⁵ + 5⁷ + 4⁵ + 4⁷ + 3⁹ + 3¹² .

It is a Duffinian number.

654433 is a lucky number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 654398 and 654407.

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, 25158 + ... + 25183.

It is an arithmetic number, because the mean of its divisors is an integer number (176197).

2⁶⁵⁴⁴³³ is an apocalyptic number.

It is an amenable number.

654433 is a deficient number, since it is larger than the sum of its proper divisors (50355).

654433 is a wasteful number, since it uses less digits than its factorization.

654433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50354.

The product of its digits is 4320, while the sum is 25.

The square root of 654433 is about 808.9703332014. The cubic root of 654433 is about 86.8203895697.

Adding to 654433 its reverse (334456), we get a palindrome (988889).

The spelling of 654433 in words is "six hundred fifty-four thousand, four hundred thirty-three".