655889420 has 12 divisors (see below), whose sum is σ = 1377367824. Its totient is φ = 262355760.

The previous prime is 655889407. The next prime is 655889447. The reversal of 655889420 is 24988556.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16397216 + ... + 16397255.

It is an arithmetic number, because the mean of its divisors is an integer number (114780652).

Almost surely, 2^655889420 is an apocalyptic number.

It is an amenable number.

655889420 is an abundant number, since it is smaller than the sum of its proper divisors (721478404).

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

655889420 is a wasteful number, since it uses less digits than its factorization.

655889420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32794480 (or 32794478 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 47.

The square root of 655889420 is about 25610.3381469281. The cubic root of 655889420 is about 868.8474719749.

The spelling of 655889420 in words is "six hundred fifty-five million, eight hundred eighty-nine thousand, four hundred twenty".