655005660 has 24 divisors (see below), whose sum is σ = 1834016016. Its totient is φ = 174668160.

The previous prime is 655005647. The next prime is 655005667. The reversal of 655005660 is 66500556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655005667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5458321 + ... + 5458440.

It is an arithmetic number, because the mean of its divisors is an integer number (76417334).

Almost surely, 2^655005660 is an apocalyptic number.

655005660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

655005660 is an abundant number, since it is smaller than the sum of its proper divisors (1179010356).

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

655005660 is a wasteful number, since it uses less digits than its factorization.

655005660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10916773 (or 10916771 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 655005660 is about 25593.0783611507. The cubic root of 655005660 is about 868.4570617672.

The spelling of 655005660 in words is "six hundred fifty-five million, five thousand, six hundred sixty".