2684635709 has 4 divisors (see below), whose sum is σ = 3068155104. Its totient is φ = 2301116316.

The previous prime is 2684635687. The next prime is 2684635717. The reversal of 2684635709 is 9075364862.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9075364862 = 2 ⋅4537682431.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2684635709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2684635909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191759687 + ... + 191759700.

It is an arithmetic number, because the mean of its divisors is an integer number (767038776).

Almost surely, 2^2684635709 is an apocalyptic number.

It is an amenable number.

2684635709 is a deficient number, since it is larger than the sum of its proper divisors (383519395).

2684635709 is an equidigital number, since it uses as much as digits as its factorization.

2684635709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383519394.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The square root of 2684635709 is about 51813.4703431453. The cubic root of 2684635709 is about 1389.8303381417.

The spelling of 2684635709 in words is "two billion, six hundred eighty-four million, six hundred thirty-five thousand, seven hundred nine".