655964960 has 144 divisors (see below), whose sum is σ = 1861574400. Its totient is φ = 217566720.

The previous prime is 655964921. The next prime is 655964963. The reversal of 655964960 is 69469556.

It is a junction number, because it is equal to n+sod(n) for n = 655964899 and 655964908.

It is not an unprimeable number, because it can be changed into a prime (655964963) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 241691 + ... + 244389.

It is an arithmetic number, because the mean of its divisors is an integer number (12927600).

Almost surely, 2^655964960 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 655964960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (930787200).

655964960 is an abundant number, since it is smaller than the sum of its proper divisors (1205609440).

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

655964960 is a wasteful number, since it uses less digits than its factorization.

655964960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759 (or 2744 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 50.

The square root of 655964960 is about 25611.8128995196. The cubic root of 655964960 is about 868.8808262857.

The spelling of 655964960 in words is "six hundred fifty-five million, nine hundred sixty-four thousand, nine hundred sixty".