655544 has 8 divisors (see below), whose sum is σ = 1229160. Its totient is φ = 327768.

The previous prime is 655541. The next prime is 655547. The reversal of 655544 is 445556.

It is an interprime number because it is at equal distance from previous prime (655541) and next prime (655547).

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40964 + ... + 40979.

It is an arithmetic number, because the mean of its divisors is an integer number (153645).

2⁶⁵⁵⁵⁴⁴ is an apocalyptic number.

It is an amenable number.

655544 is a deficient number, since it is larger than the sum of its proper divisors (573616).

655544 is a wasteful number, since it uses less digits than its factorization.

655544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81949 (or 81945 counting only the distinct ones).

The product of its digits is 12000, while the sum is 29.

The square root of 655544 is about 809.6567173809. The cubic root of 655544 is about 86.8694920856.

It can be divided in two parts, 6555 and 44, that multiplied together give a triangular number (288420 = T₇₅₉).

The spelling of 655544 in words is "six hundred fifty-five thousand, five hundred forty-four".