654543644 has 12 divisors (see below), whose sum is σ = 1159252584. Its totient is φ = 323328624.

The previous prime is 654543629. The next prime is 654543713. The reversal of 654543644 is 446345456.

It is a congruent number.

It is an unprimeable number.

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, 985427 + ... + 986090.

It is an arithmetic number, because the mean of its divisors is an integer number (96604382).

Almost surely, 2^654543644 is an apocalyptic number.

It is an amenable number.

654543644 is a deficient number, since it is larger than the sum of its proper divisors (504708940).

654543644 is a wasteful number, since it uses less digits than its factorization.

654543644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971604 (or 1971602 counting only the distinct ones).

The product of its digits is 691200, while the sum is 41.

The square root of 654543644 is about 25584.0505784366. The cubic root of 654543644 is about 868.2528215805.

The spelling of 654543644 in words is "six hundred fifty-four million, five hundred forty-three thousand, six hundred forty-four".