655349760 has 288 divisors, whose sum is σ = 2450513520. Its totient is φ = 161021952.

The previous prime is 655349759. The next prime is 655349771. The reversal of 655349760 is 67943556.

655349760 is a `hidden beast` number, since 6 + 553 + 4 + 97 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-3 number, since 3×655349760³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 1197807 + ... + 1198353.

Almost surely, 2^655349760 is an apocalyptic number.

655349760 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 655349760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1225256760).

655349760 is an abundant number, since it is smaller than the sum of its proper divisors (1795163760).

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

655349760 is a wasteful number, since it uses less digits than its factorization.

655349760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 45.

The square root of 655349760 is about 25599.7999992187. The cubic root of 655349760 is about 868.6091132574.

The spelling of 655349760 in words is "six hundred fifty-five million, three hundred forty-nine thousand, seven hundred sixty".