2686329605 has 4 divisors (see below), whose sum is σ = 3223595532. Its totient is φ = 2149063680.

The previous prime is 2686329601. The next prime is 2686329619. The reversal of 2686329605 is 5069236862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5069236862 = 2 ⋅2534618431.

It can be written as a sum of positive squares in 2 ways, for example, as 1768118401 + 918211204 = 42049^2 + 30302^2 .

It is not a de Polignac number, because 2686329605 - 2² = 2686329601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2686329605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2686329601) 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, 268632956 + ... + 268632965.

It is an arithmetic number, because the mean of its divisors is an integer number (805898883).

Almost surely, 2^2686329605 is an apocalyptic number.

It is an amenable number.

2686329605 is a deficient number, since it is larger than the sum of its proper divisors (537265927).

2686329605 is an equidigital number, since it uses as much as digits as its factorization.

2686329605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537265926.

The product of its (nonzero) digits is 933120, while the sum is 47.

The square root of 2686329605 is about 51829.8138622936. The cubic root of 2686329605 is about 1390.1225855002.

The spelling of 2686329605 in words is "two billion, six hundred eighty-six million, three hundred twenty-nine thousand, six hundred five".