656772323 has 4 divisors (see below), whose sum is σ = 658089000. Its totient is φ = 655455648.

The previous prime is 656772307. The next prime is 656772331. The reversal of 656772323 is 323277656.

656772323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 656772323 - 2⁴ = 656772307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (656712323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657590 + ... + 658587.

It is an arithmetic number, because the mean of its divisors is an integer number (164522250).

Almost surely, 2^656772323 is an apocalyptic number.

656772323 is a deficient number, since it is larger than the sum of its proper divisors (1316677).

656772323 is a wasteful number, since it uses less digits than its factorization.

656772323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316676.

The product of its digits is 317520, while the sum is 41.

The square root of 656772323 is about 25627.5695882384. The cubic root of 656772323 is about 869.2371535625.

The spelling of 656772323 in words is "six hundred fifty-six million, seven hundred seventy-two thousand, three hundred twenty-three".