2791897 has 2 divisors, whose sum is σ = 2791898. Its totient is φ = 2791896.

The previous prime is 2791849. The next prime is 2791907. The reversal of 2791897 is 7981972.

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., 1401856 + 1390041 = 1184^2 + 1179^2 .

It is a cyclic number.

It is not a de Polignac number, because 2791897 - 2¹¹ = 2789849 is a prime.

It is not a weakly prime, because it can be changed into another prime (2791807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1395948 + 1395949.

It is an arithmetic number, because the mean of its divisors is an integer number (1395949).

2^2791897 is an apocalyptic number.

It is an amenable number.

2791897 is a deficient number, since it is larger than the sum of its proper divisors (1).

2791897 is an equidigital number, since it uses as much as digits as its factorization.

2791897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 43.

The square root of 2791897 is about 1670.8970644537. The cubic root of 2791897 is about 140.8098807471.

The spelling of 2791897 in words is "two million, seven hundred ninety-one thousand, eight hundred ninety-seven".