6668146853 has 4 divisors (see below), whose sum is σ = 6668865408. Its totient is φ = 6667428300.

The previous prime is 6668146801. The next prime is 6668146873. The reversal of 6668146853 is 3586418666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6668146853 - 2⁶ = 6668146789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6668146795 and 6668146804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6668146873) 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, 345173 + ... + 363978.

It is an arithmetic number, because the mean of its divisors is an integer number (1667216352).

Almost surely, 2^6668146853 is an apocalyptic number.

It is an amenable number.

6668146853 is a deficient number, since it is larger than the sum of its proper divisors (718555).

6668146853 is an equidigital number, since it uses as much as digits as its factorization.

6668146853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718554.

The product of its digits is 4976640, while the sum is 53.

The square root of 6668146853 is about 81658.7218428013. The cubic root of 6668146853 is about 1882.2113383214.

The spelling of 6668146853 in words is "six billion, six hundred sixty-eight million, one hundred forty-six thousand, eight hundred fifty-three".