6668363057 has 4 divisors (see below), whose sum is σ = 6668626020. Its totient is φ = 6668100096.

The previous prime is 6668363029. The next prime is 6668363081. The reversal of 6668363057 is 7503638666.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1670438641 + 4997924416 = 40871^2 + 70696^2 .

It is a cyclic number.

It is not a de Polignac number, because 6668363057 - 2¹⁴ = 6668346673 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6668362996 and 6668363014.

It is not an unprimeable number, because it can be changed into a prime (6668363017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88832 + ... + 145697.

It is an arithmetic number, because the mean of its divisors is an integer number (1667156505).

Almost surely, 2^6668363057 is an apocalyptic number.

It is an amenable number.

6668363057 is a deficient number, since it is larger than the sum of its proper divisors (262963).

6668363057 is a wasteful number, since it uses less digits than its factorization.

6668363057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262962.

The product of its (nonzero) digits is 3265920, while the sum is 50.

The square root of 6668363057 is about 81660.0456588165. The cubic root of 6668363057 is about 1882.2316806660.

The spelling of 6668363057 in words is "six billion, six hundred sixty-eight million, three hundred sixty-three thousand, fifty-seven".