6766644433 has 4 divisors (see below), whose sum is σ = 6852298240. Its totient is φ = 6680990628.

The previous prime is 6766644427. The next prime is 6766644503. The reversal of 6766644433 is 3344466676.

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 6766644433 - 2¹³ = 6766636241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6766644403) 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, 42826785 + ... + 42826942.

It is an arithmetic number, because the mean of its divisors is an integer number (1713074560).

Almost surely, 2^6766644433 is an apocalyptic number.

It is an amenable number.

6766644433 is a deficient number, since it is larger than the sum of its proper divisors (85653807).

6766644433 is an equidigital number, since it uses as much as digits as its factorization.

6766644433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85653806.

The product of its digits is 5225472, while the sum is 49.

The square root of 6766644433 is about 82259.6160518635. The cubic root of 6766644433 is about 1891.4336828636.

The spelling of 6766644433 in words is "six billion, seven hundred sixty-six million, six hundred forty-four thousand, four hundred thirty-three".