655456 has 12 divisors (see below), whose sum is σ = 1290492. Its totient is φ = 327712.

The previous prime is 655453. The next prime is 655471. The reversal of 655456 is 654556.

655456 = 68² + 69² + ... + 131².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10210 + ... + 10273.

It is an arithmetic number, because the mean of its divisors is an integer number (107541).

2⁶⁵⁵⁴⁵⁶ is an apocalyptic number.

It is an amenable number.

655456 is a deficient number, since it is larger than the sum of its proper divisors (635036).

655456 is a wasteful number, since it uses less digits than its factorization.

655456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20493 (or 20485 counting only the distinct ones).

The product of its digits is 18000, while the sum is 31.

The square root of 655456 is about 809.6023715380. The cubic root of 655456 is about 86.8656048015.

Subtracting from 655456 its reverse (654556), we obtain a square (900 = 30²).

It can be divided in two parts, 655 and 456, that added together give a palindrome (1111).

The spelling of 655456 in words is "six hundred fifty-five thousand, four hundred fifty-six".