655705 has 8 divisors (see below), whose sum is σ = 792000. Its totient is φ = 521136.

The previous prime is 655693. The next prime is 655717. The reversal of 655705 is 507556.

It is an interprime number because it is at equal distance from previous prime (655693) and next prime (655717).

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

It is a cyclic number.

It is not a de Polignac number, because 655705 - 2¹⁷ = 524633 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 666 + ... + 1324.

It is an arithmetic number, because the mean of its divisors is an integer number (99000).

2⁶⁵⁵⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

655705 is a deficient number, since it is larger than the sum of its proper divisors (136295).

655705 is a wasteful number, since it uses less digits than its factorization.

655705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863.

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 655705 is about 809.7561361299. The cubic root of 655705 is about 86.8766031483.

The spelling of 655705 in words is "six hundred fifty-five thousand, seven hundred five".