655722 has 16 divisors (see below), whose sum is σ = 1457280. Its totient is φ = 218556.

The previous prime is 655717. The next prime is 655723. The reversal of 655722 is 227556.

655722 is a `hidden beast` number, since 655 + 7 + 2 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (655723) 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, 6018 + ... + 6125.

It is an arithmetic number, because the mean of its divisors is an integer number (91080).

2⁶⁵⁵⁷²² is an apocalyptic number.

655722 is an abundant number, since it is smaller than the sum of its proper divisors (801558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

655722 is a wasteful number, since it uses less digits than its factorization.

655722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12154 (or 12148 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 655722 is about 809.7666330493. The cubic root of 655722 is about 86.8773539379.

The spelling of 655722 in words is "six hundred fifty-five thousand, seven hundred twenty-two".