655549 has 8 divisors (see below), whose sum is σ = 685440. Its totient is φ = 626400.

The previous prime is 655547. The next prime is 655559. The reversal of 655549 is 945556.

It is a happy number.

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 655549 - 2¹ = 655547 is a prime.

It is a Duffinian number.

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 in 7 ways as a sum of consecutive naturals, for example, 2284 + ... + 2554.

It is an arithmetic number, because the mean of its divisors is an integer number (85680).

2⁶⁵⁵⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

655549 is a deficient number, since it is larger than the sum of its proper divisors (29891).

655549 is a wasteful number, since it uses less digits than its factorization.

655549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371.

The product of its digits is 27000, while the sum is 34.

The square root of 655549 is about 809.6598051034. The cubic root of 655549 is about 86.8697129436.

It can be divided in two parts, 6 and 55549, that added together give a palindrome (55555).

The spelling of 655549 in words is "six hundred fifty-five thousand, five hundred forty-nine".