6655660 has 24 divisors (see below), whose sum is σ = 15248016. Its totient is φ = 2420160.

The previous prime is 6655651. The next prime is 6655661. The reversal of 6655660 is 665566.

It is not an unprimeable number, because it can be changed into a prime (6655661) 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, 14907 + ... + 15346.

It is an arithmetic number, because the mean of its divisors is an integer number (635334).

Almost surely, 2^6655660 is an apocalyptic number.

It is an amenable number.

6655660 is an abundant number, since it is smaller than the sum of its proper divisors (8592356).

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

6655660 is a wasteful number, since it uses less digits than its factorization.

6655660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30273 (or 30271 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 6655660 is about 2579.8565851613. The cubic root of 6655660 is about 188.1035720232.

The spelling of 6655660 in words is "six million, six hundred fifty-five thousand, six hundred sixty".