655580320 has 96 divisors (see below), whose sum is σ = 1596300048. Its totient is φ = 254312448.

The previous prime is 655580297. The next prime is 655580381. The reversal of 655580320 is 23085556.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 334597264 + 320983056 = 18292^2 + 17916^2 .

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 822162 + ... + 822958.

Almost surely, 2^655580320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655580320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (798150024).

655580320 is an abundant number, since it is smaller than the sum of its proper divisors (940719728).

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

655580320 is a wasteful number, since it uses less digits than its factorization.

655580320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962 (or 954 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 655580320 is about 25604.3027634029. The cubic root of 655580320 is about 868.7109637240.

The spelling of 655580320 in words is "six hundred fifty-five million, five hundred eighty thousand, three hundred twenty".