2678693 has 4 divisors (see below), whose sum is σ = 2722668. Its totient is φ = 2634720.

The previous prime is 2678681. The next prime is 2678699. The reversal of 2678693 is 3968762.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 917764 + 1760929 = 958^2 + 1327^2 .

It is a cyclic number.

It is not a de Polignac number, because 2678693 - 2⁶ = 2678629 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 6³ + 7⁶ + 8⁷ + 6⁷ + 9⁴ + 3¹¹ .

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 2678693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21896 + ... + 22017.

It is an arithmetic number, because the mean of its divisors is an integer number (680667).

2^2678693 is an apocalyptic number.

It is an amenable number.

2678693 is a deficient number, since it is larger than the sum of its proper divisors (43975).

2678693 is an equidigital number, since it uses as much as digits as its factorization.

2678693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43974.

The product of its digits is 108864, while the sum is 41.

The square root of 2678693 is about 1636.6713170334. The cubic root of 2678693 is about 138.8804071146.

The spelling of 2678693 in words is "two million, six hundred seventy-eight thousand, six hundred ninety-three".