666063113 has 4 divisors (see below), whose sum is σ = 666116868. Its totient is φ = 666009360.

The previous prime is 666063109. The next prime is 666063121. The reversal of 666063113 is 311360666.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 311360666 = 2 ⋅155680333.

It can be written as a sum of positive squares in 2 ways, for example, as 120934009 + 545129104 = 10997^2 + 23348^2 .

It is a cyclic number.

It is not a de Polignac number, because 666063113 - 2² = 666063109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 666063113.

It is not an unprimeable number, because it can be changed into a prime (666063103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2183 + ... + 36563.

It is an arithmetic number, because the mean of its divisors is an integer number (166529217).

Almost surely, 2^666063113 is an apocalyptic number.

It is an amenable number.

666063113 is a deficient number, since it is larger than the sum of its proper divisors (53755).

666063113 is a wasteful number, since it uses less digits than its factorization.

666063113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53754.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 666063113 is about 25808.1985616974. The cubic root of 666063113 is about 873.3167587936.

The spelling of 666063113 in words is "six hundred sixty-six million, sixty-three thousand, one hundred thirteen".