2776266397 has 4 divisors (see below), whose sum is σ = 2782861276. Its totient is φ = 2769671520.

The previous prime is 2776266373. The next prime is 2776266403. The reversal of 2776266397 is 7936626772.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 819619641 + 1956646756 = 28629^2 + 44234^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2776266397 is a prime.

It is a super-2 number, since 2×2776266397² = 15415310214222723218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2776266307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3296808 + ... + 3297649.

It is an arithmetic number, because the mean of its divisors is an integer number (695715319).

Almost surely, 2^2776266397 is an apocalyptic number.

It is an amenable number.

2776266397 is a deficient number, since it is larger than the sum of its proper divisors (6594879).

2776266397 is an equidigital number, since it uses as much as digits as its factorization.

2776266397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6594878.

The product of its digits is 8001504, while the sum is 55.

The square root of 2776266397 is about 52690.2875015880. The cubic root of 2776266397 is about 1405.4661129996.

The spelling of 2776266397 in words is "two billion, seven hundred seventy-six million, two hundred sixty-six thousand, three hundred ninety-seven".