654673568 has 24 divisors (see below), whose sum is σ = 1320327540. Its totient is φ = 319352320.

The previous prime is 654673559. The next prime is 654673571. The reversal of 654673568 is 865376456.

It can be written as a sum of positive squares in 2 ways, for example, as 438818704 + 215854864 = 20948^2 + 14692^2 .

It is an unprimeable number.

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, 248183 + ... + 250806.

Almost surely, 2^654673568 is an apocalyptic number.

It is an amenable number.

654673568 is an abundant number, since it is smaller than the sum of its proper divisors (665653972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

654673568 is a wasteful number, since it uses less digits than its factorization.

654673568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499040 (or 499032 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 50.

The square root of 654673568 is about 25586.5896125295. The cubic root of 654673568 is about 868.3102658867.

The spelling of 654673568 in words is "six hundred fifty-four million, six hundred seventy-three thousand, five hundred sixty-eight".