6417221266 has 4 divisors (see below), whose sum is σ = 9625831902. Its totient is φ = 3208610632.

The previous prime is 6417221203. The next prime is 6417221267. The reversal of 6417221266 is 6621227146.

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

It can be written as a sum of positive squares in only one way, i.e., 5918994225 + 498227041 = 76935^2 + 22321^2 .

It is not an unprimeable number, because it can be changed into a prime (6417221267) 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, 1604305315 + ... + 1604305318.

Almost surely, 2^6417221266 is an apocalyptic number.

6417221266 is a deficient number, since it is larger than the sum of its proper divisors (3208610636).

6417221266 is a wasteful number, since it uses less digits than its factorization.

6417221266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208610635.

The product of its digits is 48384, while the sum is 37.

The square root of 6417221266 is about 80107.5606044773. The cubic root of 6417221266 is about 1858.2993344210.

The spelling of 6417221266 in words is "six billion, four hundred seventeen million, two hundred twenty-one thousand, two hundred sixty-six".