655594 has 4 divisors (see below), whose sum is σ = 983394. Its totient is φ = 327796.

The previous prime is 655583. The next prime is 655597. The reversal of 655594 is 495556.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 648025 + 7569 = 805^2 + 87^2 .

It is not an unprimeable number, because it can be changed into a prime (655597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163897 + ... + 163900.

2⁶⁵⁵⁵⁹⁴ is an apocalyptic number.

655594 is a deficient number, since it is larger than the sum of its proper divisors (327800).

655594 is a wasteful number, since it uses less digits than its factorization.

655594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327799.

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

The square root of 655594 is about 809.6875940756. The cubic root of 655594 is about 86.8717006148.

The spelling of 655594 in words is "six hundred fifty-five thousand, five hundred ninety-four".