655641360 has 240 divisors, whose sum is σ = 2529034560. Its totient is φ = 150543360.

The previous prime is 655641353. The next prime is 655641377. The reversal of 655641360 is 63146556.

655641360 is a `hidden beast` number, since 6 + 5 + 5 + 641 + 3 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

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 (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 148302 + ... + 152658.

It is an arithmetic number, because the mean of its divisors is an integer number (10537644).

Almost surely, 2^655641360 is an apocalyptic number.

655641360 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 655641360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1264517280).

655641360 is an abundant number, since it is smaller than the sum of its proper divisors (1873393200).

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

655641360 is a wasteful number, since it uses less digits than its factorization.

655641360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4406 (or 4397 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 655641360 is about 25605.4947228129. The cubic root of 655641360 is about 868.7379243012.

The spelling of 655641360 in words is "six hundred fifty-five million, six hundred forty-one thousand, three hundred sixty".