6466066066 has 4 divisors (see below), whose sum is σ = 9699099102. Its totient is φ = 3233033032.

The previous prime is 6466066051. The next prime is 6466066067. The reversal of 6466066066 is 6606606646.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6606606646 = 2 ⋅3303303323.

It can be written as a sum of positive squares in only one way, i.e., 5863118041 + 602948025 = 76571^2 + 24555^2 .

It is not an unprimeable number, because it can be changed into a prime (6466066067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1616516515 + ... + 1616516518.

Almost surely, 2^6466066066 is an apocalyptic number.

6466066066 is a deficient number, since it is larger than the sum of its proper divisors (3233033036).

6466066066 is a wasteful number, since it uses less digits than its factorization.

6466066066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233033035.

The product of its (nonzero) digits is 1119744, while the sum is 46.

The square root of 6466066066 is about 80411.8527705960. The cubic root of 6466066066 is about 1863.0022491626.

It can be divided in two parts, 64 and 66066066, that multiplied together give a palindrome (4228228224).

The spelling of 6466066066 in words is "six billion, four hundred sixty-six million, sixty-six thousand, sixty-six".