654742244 has 12 divisors (see below), whose sum is σ = 1233937404. Its totient is φ = 302188704.

The previous prime is 654742237. The next prime is 654742247. The reversal of 654742244 is 442247456.

It can be written as a sum of positive squares in 2 ways, for example, as 341806144 + 312936100 = 18488^2 + 17690^2 .

It is a junction number, because it is equal to n+sod(n) for n = 654742198 and 654742207.

It is not an unprimeable number, because it can be changed into a prime (654742247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6295547 + ... + 6295650.

It is an arithmetic number, because the mean of its divisors is an integer number (102828117).

Almost surely, 2^654742244 is an apocalyptic number.

It is an amenable number.

654742244 is a deficient number, since it is larger than the sum of its proper divisors (579195160).

654742244 is a wasteful number, since it uses less digits than its factorization.

654742244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12591214 (or 12591212 counting only the distinct ones).

The product of its digits is 215040, while the sum is 38.

The square root of 654742244 is about 25587.9316084751. The cubic root of 654742244 is about 868.3406270691.

The spelling of 654742244 in words is "six hundred fifty-four million, seven hundred forty-two thousand, two hundred forty-four".