668572283 has 2 divisors, whose sum is σ = 668572284. Its totient is φ = 668572282.

The previous prime is 668572271. The next prime is 668572291. The reversal of 668572283 is 382275866.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-668572283 is a prime.

It is not a weakly prime, because it can be changed into another prime (668572253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334286141 + 334286142.

It is an arithmetic number, because the mean of its divisors is an integer number (334286142).

Almost surely, 2^668572283 is an apocalyptic number.

668572283 is a deficient number, since it is larger than the sum of its proper divisors (1).

668572283 is an equidigital number, since it uses as much as digits as its factorization.

668572283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 47.

The square root of 668572283 is about 25856.7647434864. The cubic root of 668572283 is about 874.4120275201.

The spelling of 668572283 in words is "six hundred sixty-eight million, five hundred seventy-two thousand, two hundred eighty-three".