2774785465 has 4 divisors (see below), whose sum is σ = 3329742564. Its totient is φ = 2219828368.

The previous prime is 2774785463. The next prime is 2774785469. The reversal of 2774785465 is 5645874772.

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 719795241 + 2054990224 = 26829^2 + 45332^2 .

It is a cyclic number.

It is not a de Polignac number, because 2774785465 - 2¹ = 2774785463 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2774785463) 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, 277478542 + ... + 277478551.

It is an arithmetic number, because the mean of its divisors is an integer number (832435641).

Almost surely, 2^2774785465 is an apocalyptic number.

It is an amenable number.

2774785465 is a deficient number, since it is larger than the sum of its proper divisors (554957099).

2774785465 is an equidigital number, since it uses as much as digits as its factorization.

2774785465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554957098.

The product of its digits is 13171200, while the sum is 55.

The square root of 2774785465 is about 52676.2324487999. The cubic root of 2774785465 is about 1405.2161646104.

The spelling of 2774785465 in words is "two billion, seven hundred seventy-four million, seven hundred eighty-five thousand, four hundred sixty-five".