666245298 has 32 divisors (see below), whose sum is σ = 1429099200. Its totient is φ = 206421696.

The previous prime is 666245297. The next prime is 666245309. The reversal of 666245298 is 892542666.

It is a happy number.

666245298 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (666245291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49093 + ... + 61176.

It is an arithmetic number, because the mean of its divisors is an integer number (44659350).

Almost surely, 2^666245298 is an apocalyptic number.

666245298 is an abundant number, since it is smaller than the sum of its proper divisors (762853902).

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

666245298 is a wasteful number, since it uses less digits than its factorization.

666245298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110346.

The product of its digits is 1244160, while the sum is 48.

The square root of 666245298 is about 25811.7279158138. The cubic root of 666245298 is about 873.3963762285.

The spelling of 666245298 in words is "six hundred sixty-six million, two hundred forty-five thousand, two hundred ninety-eight".