655360000 has 105 divisors (see below), whose sum is σ = 1637874931. Its totient is φ = 262144000.

The previous prime is 655359983. The next prime is 655360001. The reversal of 655360000 is 63556.

The square root of 655360000 is 25600.

It is a perfect power (a square, a biquadrate), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 51380224 + 603979776 = 7168^2 + 24576^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655360001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 4 ways as a sum of consecutive naturals, for example, 131071998 + ... + 131072002.

Almost surely, 2^655360000 is an apocalyptic number.

655360000 is the 25600-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655360000

655360000 is an abundant number, since it is smaller than the sum of its proper divisors (982514931).

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

655360000 is an frugal number, since it uses more digits than its factorization.

655360000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60 (or 7 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The cubic root of 655360000 is about 868.6136373104.

Multiplying 655360000 by its sum of digits (25), we get a square (16384000000 = 128000²).

655360000 divided by its sum of digits (25) gives a square (26214400 = 5120²).

The spelling of 655360000 in words is "six hundred fifty-five million, three hundred sixty thousand".