655838 has 8 divisors (see below), whose sum is σ = 1004832. Its totient is φ = 320896.

The previous prime is 655807. The next prime is 655847. The reversal of 655838 is 838556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 655798 and 655807.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 655838.

It is an unprimeable number.

655838 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3395 + ... + 3582.

It is an arithmetic number, because the mean of its divisors is an integer number (125604).

2⁶⁵⁵⁸³⁸ is an apocalyptic number.

655838 is a deficient number, since it is larger than the sum of its proper divisors (348994).

655838 is a wasteful number, since it uses less digits than its factorization.

655838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7026.

The product of its digits is 28800, while the sum is 35.

The square root of 655838 is about 809.8382554560. The cubic root of 655838 is about 86.8824766265.

The spelling of 655838 in words is "six hundred fifty-five thousand, eight hundred thirty-eight".