2681947 has 4 divisors (see below), whose sum is σ = 2718760. Its totient is φ = 2645136.

The previous prime is 2681929. The next prime is 2681951. The reversal of 2681947 is 7491862.

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

It is a cyclic number.

It is not a de Polignac number, because 2681947 - 2¹¹ = 2679899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2681927) 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, 18297 + ... + 18442.

It is an arithmetic number, because the mean of its divisors is an integer number (679690).

2^2681947 is an apocalyptic number.

2681947 is a deficient number, since it is larger than the sum of its proper divisors (36813).

2681947 is an equidigital number, since it uses as much as digits as its factorization.

2681947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36812.

The product of its digits is 24192, while the sum is 37.

The square root of 2681947 is about 1637.6651061801. The cubic root of 2681947 is about 138.9366203470.

The spelling of 2681947 in words is "two million, six hundred eighty-one thousand, nine hundred forty-seven".