656328457 has 8 divisors (see below), whose sum is σ = 691594560. Its totient is φ = 621134640.

The previous prime is 656328443. The next prime is 656328499. The reversal of 656328457 is 754823656.

656328457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 656328457 - 2¹¹ = 656326409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (656328157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1107 + ... + 36247.

It is an arithmetic number, because the mean of its divisors is an integer number (86449320).

Almost surely, 2^656328457 is an apocalyptic number.

It is an amenable number.

656328457 is a deficient number, since it is larger than the sum of its proper divisors (35266103).

656328457 is a wasteful number, since it uses less digits than its factorization.

656328457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36143.

The product of its digits is 1209600, while the sum is 46.

The square root of 656328457 is about 25618.9081929734. The cubic root of 656328457 is about 869.0412907778.

The spelling of 656328457 in words is "six hundred fifty-six million, three hundred twenty-eight thousand, four hundred fifty-seven".