654565321627 has 16 divisors (see below), whose sum is σ = 751938278400. Its totient is φ = 558159056928.

The previous prime is 654565321589. The next prime is 654565321651. The reversal of 654565321627 is 726123565456.

It is a cyclic number.

It is not a de Polignac number, because 654565321627 - 2²⁷ = 654431103899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654565301627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11445618 + ... + 11502664.

It is an arithmetic number, because the mean of its divisors is an integer number (46996142400).

Almost surely, 2^654565321627 is an apocalyptic number.

654565321627 is a deficient number, since it is larger than the sum of its proper divisors (97372956773).

654565321627 is a wasteful number, since it uses less digits than its factorization.

654565321627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65490.

The product of its digits is 9072000, while the sum is 52.

The spelling of 654565321627 in words is "six hundred fifty-four billion, five hundred sixty-five million, three hundred twenty-one thousand, six hundred twenty-seven".