655360240 has 20 divisors (see below), whose sum is σ = 1523712744. Its totient is φ = 262144064.

The previous prime is 655360219. The next prime is 655360253. The reversal of 655360240 is 42063556.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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, 4095922 + ... + 4096081.

Almost surely, 2^655360240 is an apocalyptic number.

It is an amenable number.

655360240 is an abundant number, since it is smaller than the sum of its proper divisors (868352504).

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

655360240 is a wasteful number, since it uses less digits than its factorization.

655360240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8192016 (or 8192010 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 655360240 is about 25600.0046874996. The cubic root of 655360240 is about 868.6137433423.

The spelling of 655360240 in words is "six hundred fifty-five million, three hundred sixty thousand, two hundred forty".