2776220642 has 8 divisors (see below), whose sum is σ = 4484664156. Its totient is φ = 1281332592.

The previous prime is 2776220639. The next prime is 2776220647. The reversal of 2776220642 is 2460226772.

It can be written as a sum of positive squares in 2 ways, for example, as 2041322761 + 734897881 = 45181^2 + 27109^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2776220596 and 2776220605.

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 3 ways as a sum of consecutive naturals, for example, 53388833 + ... + 53388884.

Almost surely, 2^2776220642 is an apocalyptic number.

2776220642 is a deficient number, since it is larger than the sum of its proper divisors (1708443514).

2776220642 is a wasteful number, since it uses less digits than its factorization.

2776220642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106777732.

The product of its (nonzero) digits is 112896, while the sum is 38.

The square root of 2776220642 is about 52689.8533116197. The cubic root of 2776220642 is about 1405.4583919040.

The spelling of 2776220642 in words is "two billion, seven hundred seventy-six million, two hundred twenty thousand, six hundred forty-two".