2859696689 has 4 divisors (see below), whose sum is σ = 2859820656. Its totient is φ = 2859572724.

The previous prime is 2859696683. The next prime is 2859696703. The reversal of 2859696689 is 9866969582.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9866969582 = 2 ⋅4933484791.

It is a cyclic number.

It is not a de Polignac number, because 2859696689 - 2¹⁶ = 2859631153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2859696683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16019 + ... + 77304.

It is an arithmetic number, because the mean of its divisors is an integer number (714955164).

Almost surely, 2^2859696689 is an apocalyptic number.

It is an amenable number.

2859696689 is a deficient number, since it is larger than the sum of its proper divisors (123967).

2859696689 is an equidigital number, since it uses as much as digits as its factorization.

2859696689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123966.

The product of its digits is 100776960, while the sum is 68.

The square root of 2859696689 is about 53476.1319562288. The cubic root of 2859696689 is about 1419.4060679879.

The spelling of 2859696689 in words is "two billion, eight hundred fifty-nine million, six hundred ninety-six thousand, six hundred eighty-nine".