655849 has 2 divisors, whose sum is σ = 655850. Its totient is φ = 655848.

The previous prime is 655847. The next prime is 655859. The reversal of 655849 is 948556.

655849 is nontrivially palindromic in base 7.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 469225 + 186624 = 685^2 + 432^2 .

It is a cyclic number.

It is not a de Polignac number, because 655849 - 2¹ = 655847 is a prime.

Together with 655847, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (655847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327924 + 327925.

It is an arithmetic number, because the mean of its divisors is an integer number (327925).

2⁶⁵⁵⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

655849 is a deficient number, since it is larger than the sum of its proper divisors (1).

655849 is an equidigital number, since it uses as much as digits as its factorization.

655849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 37.

The square root of 655849 is about 809.8450469071. The cubic root of 655849 is about 86.8829623673.

It can be divided in two parts, 6 and 55849, that added together give a palindrome (55855).

The spelling of 655849 in words is "six hundred fifty-five thousand, eight hundred forty-nine".