655867422 has 256 divisors, whose sum is σ = 1880064000. Its totient is φ = 165255552.

The previous prime is 655867417. The next prime is 655867453. The reversal of 655867422 is 224768556.

655867422 is a `hidden beast` number, since 6 + 558 + 6 + 74 + 22 = 666.

Its product of digits (806400) is a multiple of the sum of its prime factors (180).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 9789033 + ... + 9789099.

It is an arithmetic number, because the mean of its divisors is an integer number (7344000).

Almost surely, 2^655867422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655867422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (940032000).

655867422 is an abundant number, since it is smaller than the sum of its proper divisors (1224196578).

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

655867422 is a wasteful number, since it uses less digits than its factorization.

655867422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 174 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 655867422 is about 25609.9086683260. The cubic root of 655867422 is about 868.8377583861.

The spelling of 655867422 in words is "six hundred fifty-five million, eight hundred sixty-seven thousand, four hundred twenty-two".