655456000 has 72 divisors (see below), whose sum is σ = 1632902544. Its totient is φ = 262169600.

The previous prime is 655455991. The next prime is 655456007. The reversal of 655456000 is 654556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655456007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21759 + ... + 42241.

It is an arithmetic number, because the mean of its divisors is an integer number (22679202).

Almost surely, 2^655456000 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 655456000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (816451272).

655456000 is an abundant number, since it is smaller than the sum of its proper divisors (977446544).

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

655456000 is an equidigital number, since it uses as much as digits as its factorization.

655456000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20514 (or 20490 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 655456000 is about 25601.8749313405. The cubic root of 655456000 is about 868.6560480149.

The spelling of 655456000 in words is "six hundred fifty-five million, four hundred fifty-six thousand".