2776220641 has 8 divisors (see below), whose sum is σ = 2785089600. Its totient is φ = 2767366992.

The previous prime is 2776220639. The next prime is 2776220647. The reversal of 2776220641 is 1460226772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2776220641 - 2¹ = 2776220639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2776220641.

It is not an unprimeable number, because it can be changed into a prime (2776220647) 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 7 ways as a sum of consecutive naturals, for example, 435906 + ... + 442228.

It is an arithmetic number, because the mean of its divisors is an integer number (348136200).

Almost surely, 2^2776220641 is an apocalyptic number.

It is an amenable number.

2776220641 is a deficient number, since it is larger than the sum of its proper divisors (8868959).

2776220641 is an equidigital number, since it uses as much as digits as its factorization.

2776220641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7655.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 2776220641 is about 52689.8533021302. The cubic root of 2776220641 is about 1405.4583917352.

The spelling of 2776220641 in words is "two billion, seven hundred seventy-six million, two hundred twenty thousand, six hundred forty-one".