2681897 has 2 divisors, whose sum is σ = 2681898. Its totient is φ = 2681896.

The previous prime is 2681893. The next prime is 2681927. The reversal of 2681897 is 7981862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2637376 + 44521 = 1624^2 + 211^2 .

It is a cyclic number.

It is not a de Polignac number, because 2681897 - 2² = 2681893 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2681893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1340948 + 1340949.

It is an arithmetic number, because the mean of its divisors is an integer number (1340949).

2^2681897 is an apocalyptic number.

It is an amenable number.

2681897 is a deficient number, since it is larger than the sum of its proper divisors (1).

2681897 is an equidigital number, since it uses as much as digits as its factorization.

2681897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 41.

The square root of 2681897 is about 1637.6498404726. The cubic root of 2681897 is about 138.9357569352.

The spelling of 2681897 in words is "two million, six hundred eighty-one thousand, eight hundred ninety-seven".