655563060 has 72 divisors (see below), whose sum is σ = 2006844840. Its totient is φ = 173207808.

The previous prime is 655563049. The next prime is 655563091. The reversal of 655563060 is 60365556.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 286692624 + 368870436 = 16932^2 + 19206^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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, 2914 + ... + 36326.

It is an arithmetic number, because the mean of its divisors is an integer number (27872845).

Almost surely, 2^655563060 is an apocalyptic number.

655563060 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 655563060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1003422420).

655563060 is an abundant number, since it is smaller than the sum of its proper divisors (1351281780).

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

655563060 is a wasteful number, since it uses less digits than its factorization.

655563060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33537 (or 33532 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The square root of 655563060 is about 25603.9657084601. The cubic root of 655563060 is about 868.7033399020.

The spelling of 655563060 in words is "six hundred fifty-five million, five hundred sixty-three thousand, sixty".