665655010 has 16 divisors (see below), whose sum is σ = 1209813696. Its totient is φ = 263676528.

The previous prime is 665654981. The next prime is 665655019. The reversal of 665655010 is 10556566.

It is not an unprimeable number, because it can be changed into a prime (665655019) 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, 322104 + ... + 324163.

It is an arithmetic number, because the mean of its divisors is an integer number (75613356).

Almost surely, 2^665655010 is an apocalyptic number.

665655010 is a deficient number, since it is larger than the sum of its proper divisors (544158686).

665655010 is a wasteful number, since it uses less digits than its factorization.

665655010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646377.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 665655010 is about 25800.2908898330. The cubic root of 665655010 is about 873.1383592809.

The spelling of 665655010 in words is "six hundred sixty-five million, six hundred fifty-five thousand, ten".