655249 has 4 divisors (see below), whose sum is σ = 748864. Its totient is φ = 561636.

The previous prime is 655243. The next prime is 655261. The reversal of 655249 is 942556.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 655249 - 2³ = 655241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 655249.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 655249.

It is not an unprimeable number, because it can be changed into a prime (655241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46797 + ... + 46810.

It is an arithmetic number, because the mean of its divisors is an integer number (187216).

2⁶⁵⁵²⁴⁹ is an apocalyptic number.

It is an amenable number.

655249 is a deficient number, since it is larger than the sum of its proper divisors (93615).

655249 is an equidigital number, since it uses as much as digits as its factorization.

655249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93614.

The product of its digits is 10800, while the sum is 31.

The square root of 655249 is about 809.4745209085. The cubic root of 655249 is about 86.8564594770.

It can be divided in two parts, 6 and 55249, that added together give a palindrome (55255).

The spelling of 655249 in words is "six hundred fifty-five thousand, two hundred forty-nine".