655106880 has 112 divisors (see below), whose sum is σ = 2147157504. Its totient is φ = 169052160.

The previous prime is 655106873. The next prime is 655106899. The reversal of 655106880 is 88601556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18754 + ... + 40766.

Almost surely, 2^655106880 is an apocalyptic number.

655106880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655106880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1073578752).

655106880 is an abundant number, since it is smaller than the sum of its proper divisors (1492050624).

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

655106880 is a wasteful number, since it uses less digits than its factorization.

655106880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22064 (or 22054 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 655106880 is about 25595.0557725511. The cubic root of 655106880 is about 868.5017945593.

It can be divided in two parts, 65510 and 6880, that added together give a triangular number (72390 = T₃₈₀).

The spelling of 655106880 in words is "six hundred fifty-five million, one hundred six thousand, eight hundred eighty".