2765467897 has 4 divisors (see below), whose sum is σ = 2796540660. Its totient is φ = 2734395136.

The previous prime is 2765467849. The next prime is 2765467919. The reversal of 2765467897 is 7987645672.

It is a happy number.

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 1522482361 + 1242985536 = 39019^2 + 35256^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2765467897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2765467697) 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, 15536248 + ... + 15536425.

It is an arithmetic number, because the mean of its divisors is an integer number (699135165).

Almost surely, 2^2765467897 is an apocalyptic number.

It is an amenable number.

2765467897 is a deficient number, since it is larger than the sum of its proper divisors (31072763).

2765467897 is an equidigital number, since it uses as much as digits as its factorization.

2765467897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31072762.

The product of its digits is 35562240, while the sum is 61.

The square root of 2765467897 is about 52587.7162177633. The cubic root of 2765467897 is about 1403.6415227587.

The spelling of 2765467897 in words is "two billion, seven hundred sixty-five million, four hundred sixty-seven thousand, eight hundred ninety-seven".