656342144 has 16 divisors (see below), whose sum is σ = 1307556870. Its totient is φ = 328171008.

The previous prime is 656342119. The next prime is 656342147. The reversal of 656342144 is 441243656.

656342144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 396487744 + 259854400 = 19912^2 + 16120^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (656342147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2563709 + ... + 2563964.

Almost surely, 2^656342144 is an apocalyptic number.

656342144 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

656342144 is a deficient number, since it is larger than the sum of its proper divisors (651214726).

656342144 is an equidigital number, since it uses as much as digits as its factorization.

656342144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5127687 (or 5127675 counting only the distinct ones).

The product of its digits is 69120, while the sum is 35.

The square root of 656342144 is about 25619.1753184992. The cubic root of 656342144 is about 869.0473316990.

The spelling of 656342144 in words is "six hundred fifty-six million, three hundred forty-two thousand, one hundred forty-four".