6622266661 has 4 divisors (see below), whose sum is σ = 6622624800. Its totient is φ = 6621908524.

The previous prime is 6622266647. The next prime is 6622266671. The reversal of 6622266661 is 1666622266.

6622266661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6622266661 - 2¹⁷ = 6622135589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6622266641) 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, 149731 + ... + 188848.

It is an arithmetic number, because the mean of its divisors is an integer number (1655656200).

Almost surely, 2^6622266661 is an apocalyptic number.

It is an amenable number.

6622266661 is a deficient number, since it is larger than the sum of its proper divisors (358139).

6622266661 is a wasteful number, since it uses less digits than its factorization.

6622266661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358138.

The product of its digits is 373248, while the sum is 43.

The square root of 6622266661 is about 81377.3104802561. The cubic root of 6622266661 is about 1877.8845471814.

The spelling of 6622266661 in words is "six billion, six hundred twenty-two million, two hundred sixty-six thousand, six hundred sixty-one".