2726981 has 2 divisors, whose sum is σ = 2726982. Its totient is φ = 2726980.

The previous prime is 2726959. The next prime is 2726989. The reversal of 2726981 is 1896272.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1934881 + 792100 = 1391^2 + 890^2 .

It is a cyclic number.

It is not a de Polignac number, because 2726981 - 2⁶ = 2726917 is a prime.

It is a super-2 number, since 2×2726981² = 14872850748722, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2726989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1363490 + 1363491.

It is an arithmetic number, because the mean of its divisors is an integer number (1363491).

2^2726981 is an apocalyptic number.

It is an amenable number.

2726981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2726981 is an equidigital number, since it uses as much as digits as its factorization.

2726981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 2726981 is about 1651.3573205094. The cubic root of 2726981 is about 139.7099607626.

The spelling of 2726981 in words is "two million, seven hundred twenty-six thousand, nine hundred eighty-one".