655918422 has 16 divisors (see below), whose sum is σ = 1312666560. Its totient is φ = 218501192.

The previous prime is 655918387. The next prime is 655918423. The reversal of 655918422 is 224819556.

It is a super-3 number, since 3×655918422³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655918423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24048 + ... + 43475.

It is an arithmetic number, because the mean of its divisors is an integer number (82041660).

Almost surely, 2^655918422 is an apocalyptic number.

655918422 is an abundant number, since it is smaller than the sum of its proper divisors (656748138).

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

655918422 is a wasteful number, since it uses less digits than its factorization.

655918422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69147.

The product of its digits is 172800, while the sum is 42.

The square root of 655918422 is about 25610.9043573240. The cubic root of 655918422 is about 868.8602779664.

The spelling of 655918422 in words is "six hundred fifty-five million, nine hundred eighteen thousand, four hundred twenty-two".