655577 has 8 divisors (see below), whose sum is σ = 712320. Its totient is φ = 599760.

The previous prime is 655561. The next prime is 655579. The reversal of 655577 is 775556.

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 655577 - 2⁴ = 655561 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 655577.

It is not an unprimeable number, because it can be changed into a prime (655579) 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 in 7 ways as a sum of consecutive naturals, for example, 2624 + ... + 2862.

It is an arithmetic number, because the mean of its divisors is an integer number (89040).

2⁶⁵⁵⁵⁷⁷ is an apocalyptic number.

It is an amenable number.

655577 is a deficient number, since it is larger than the sum of its proper divisors (56743).

655577 is a wasteful number, since it uses less digits than its factorization.

655577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463.

The product of its digits is 36750, while the sum is 35.

The square root of 655577 is about 809.6770961315. The cubic root of 655577 is about 86.8709497275.

The spelling of 655577 in words is "six hundred fifty-five thousand, five hundred seventy-seven".