654066656 has 12 divisors (see below), whose sum is σ = 1287693792. Its totient is φ = 327033312.

The previous prime is 654066629. The next prime is 654066731. The reversal of 654066656 is 656660456.

654066656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10219760 + ... + 10219823.

It is an arithmetic number, because the mean of its divisors is an integer number (107307816).

Almost surely, 2^654066656 is an apocalyptic number.

It is an amenable number.

654066656 is a deficient number, since it is larger than the sum of its proper divisors (633627136).

654066656 is a wasteful number, since it uses less digits than its factorization.

654066656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20439593 (or 20439585 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 44.

The square root of 654066656 is about 25574.7268998126. The cubic root of 654066656 is about 868.0418619691.

The spelling of 654066656 in words is "six hundred fifty-four million, sixty-six thousand, six hundred fifty-six".