655436 has 6 divisors (see below), whose sum is σ = 1147020. Its totient is φ = 327716.

The previous prime is 655399. The next prime is 655439. The reversal of 655436 is 634556.

It is a junction number, because it is equal to n+sod(n) for n = 655399 and 655408.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 655436.

It is not an unprimeable number, because it can be changed into a prime (655439) by changing a digit.

655436 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81926 + ... + 81933.

It is an arithmetic number, because the mean of its divisors is an integer number (191170).

2⁶⁵⁵⁴³⁶ is an apocalyptic number.

It is an amenable number.

655436 is a deficient number, since it is larger than the sum of its proper divisors (491584).

655436 is a wasteful number, since it uses less digits than its factorization.

655436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163863 (or 163861 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

The square root of 655436 is about 809.5900197013. The cubic root of 655436 is about 86.8647212793.

The spelling of 655436 in words is "six hundred fifty-five thousand, four hundred thirty-six".