656321627 has 4 divisors (see below), whose sum is σ = 706807920. Its totient is φ = 605835336.

The previous prime is 656321597. The next prime is 656321647. The reversal of 656321627 is 726123656.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 656321627 - 2⁸ = 656321371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (656321647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25243127 + ... + 25243152.

It is an arithmetic number, because the mean of its divisors is an integer number (176701980).

Almost surely, 2^656321627 is an apocalyptic number.

656321627 is a deficient number, since it is larger than the sum of its proper divisors (50486293).

656321627 is a wasteful number, since it uses less digits than its factorization.

656321627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50486292.

The product of its digits is 90720, while the sum is 38.

The square root of 656321627 is about 25618.7748926447. The cubic root of 656321627 is about 869.0382762442.

The spelling of 656321627 in words is "six hundred fifty-six million, three hundred twenty-one thousand, six hundred twenty-seven".