655545330 has 144 divisors (see below), whose sum is σ = 1984214232. Its totient is φ = 149529600.

The previous prime is 655545323. The next prime is 655545349. The reversal of 655545330 is 33545556.

It can be written as a sum of positive squares in 4 ways, for example, as 575568081 + 79977249 = 23991^2 + 8943^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 183360 + ... + 186900.

Almost surely, 2^655545330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655545330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (992107116).

655545330 is an abundant number, since it is smaller than the sum of its proper divisors (1328668902).

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

655545330 is a wasteful number, since it uses less digits than its factorization.

655545330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3593 (or 3579 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 36.

The square root of 655545330 is about 25603.6194706920. The cubic root of 655545330 is about 868.6955083396.

The spelling of 655545330 in words is "six hundred fifty-five million, five hundred forty-five thousand, three hundred thirty".