2874782689 has 3 divisors (see below), whose sum is σ = 2874836307. Its totient is φ = 2874729072.

The previous prime is 2874782663. The next prime is 2874782717. The reversal of 2874782689 is 9862874782.

The square root of 2874782689 is 53617.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9862874782 = 2 ⋅4931437391.

It can be written as a sum of positive squares in only one way, i.e., 2820141025 + 54641664 = 53105^2 + 7392^2 .

It is not a de Polignac number, because 2874782689 - 2⁹ = 2874782177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2874782629) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 26809 + ... + 80425.

It is an arithmetic number, because the mean of its divisors is an integer number (958278769).

Almost surely, 2^2874782689 is an apocalyptic number.

2874782689 is the 53617-th square number.

2874782689 is the 26809-th centered octagonal number.

It is an amenable number.

2874782689 is a deficient number, since it is larger than the sum of its proper divisors (53618).

2874782689 is an frugal number, since it uses more digits than its factorization.

2874782689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107234 (or 53617 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 61.

The cubic root of 2874782689 is about 1421.8976627288.

The spelling of 2874782689 in words is "two billion, eight hundred seventy-four million, seven hundred eighty-two thousand, six hundred eighty-nine".