654983568 has 120 divisors (see below), whose sum is σ = 1891649760. Its totient is φ = 211438080.

The previous prime is 654983551. The next prime is 654983621. The reversal of 654983568 is 865389456.

It is a happy number.

654983568 is a `hidden beast` number, since 6 + 549 + 8 + 35 + 68 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 860308 + ... + 861068.

It is an arithmetic number, because the mean of its divisors is an integer number (15763748).

Almost surely, 2^654983568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654983568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (945824880).

654983568 is an abundant number, since it is smaller than the sum of its proper divisors (1236666192).

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

654983568 is a wasteful number, since it uses less digits than its factorization.

654983568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957 (or 948 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The square root of 654983568 is about 25592.6467564416. The cubic root of 654983568 is about 868.4472978978.

The spelling of 654983568 in words is "six hundred fifty-four million, nine hundred eighty-three thousand, five hundred sixty-eight".