656144 has 20 divisors (see below), whose sum is σ = 1327296. Its totient is φ = 313632.

The previous prime is 656141. The next prime is 656147. The reversal of 656144 is 441656.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (656141) and next prime (656147).

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 656144.

It is not an unprimeable number, because it can be changed into a prime (656141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 524 + ... + 1259.

2⁶⁵⁶¹⁴⁴ is an apocalyptic number.

It is an amenable number.

656144 is an abundant number, since it is smaller than the sum of its proper divisors (671152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

656144 is a wasteful number, since it uses less digits than its factorization.

656144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814 (or 1808 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 656144 is about 810.0271600385. The cubic root of 656144 is about 86.8959870280.

The spelling of 656144 in words is "six hundred fifty-six thousand, one hundred forty-four".