2678326805 has 16 divisors (see below), whose sum is σ = 4007055744. Its totient is φ = 1669606080.

The previous prime is 2678326801. The next prime is 2678326831. The reversal of 2678326805 is 5086238762.

It is a happy number.

It is not a de Polignac number, because 2678326805 - 2² = 2678326801 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 2678326805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678326801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3477962 + ... + 3478731.

It is an arithmetic number, because the mean of its divisors is an integer number (250440984).

Almost surely, 2^2678326805 is an apocalyptic number.

It is an amenable number.

2678326805 is a deficient number, since it is larger than the sum of its proper divisors (1328728939).

2678326805 is a wasteful number, since it uses less digits than its factorization.

2678326805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6956716.

The product of its (nonzero) digits is 967680, while the sum is 47.

The square root of 2678326805 is about 51752.5536084936. The cubic root of 2678326805 is about 1388.7407820368.

The spelling of 2678326805 in words is "two billion, six hundred seventy-eight million, three hundred twenty-six thousand, eight hundred five".