655006880 has 144 divisors (see below), whose sum is σ = 1776079872. Its totient is φ = 227673600.

The previous prime is 655006871. The next prime is 655006897. The reversal of 655006880 is 88600556.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 444545 + ... + 446015.

It is an arithmetic number, because the mean of its divisors is an integer number (12333888).

Almost surely, 2^655006880 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 655006880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (888039936).

655006880 is an abundant number, since it is smaller than the sum of its proper divisors (1121072992).

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

655006880 is a wasteful number, since it uses less digits than its factorization.

655006880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531 (or 1512 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 655006880 is about 25593.1021957089. The cubic root of 655006880 is about 868.4576009569.

The spelling of 655006880 in words is "six hundred fifty-five million, six thousand, eight hundred eighty".