2691097 has 2 divisors, whose sum is σ = 2691098. Its totient is φ = 2691096.

The previous prime is 2691067. The next prime is 2691119. The reversal of 2691097 is 7901962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1648656 + 1042441 = 1284^2 + 1021^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2691097 is a prime.

It is a nialpdrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2691037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1345548 + 1345549.

It is an arithmetic number, because the mean of its divisors is an integer number (1345549).

2^2691097 is an apocalyptic number.

It is an amenable number.

2691097 is a deficient number, since it is larger than the sum of its proper divisors (1).

2691097 is an equidigital number, since it uses as much as digits as its factorization.

2691097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 2691097 is about 1640.4563389496. The cubic root of 2691097 is about 139.0944443805.

The spelling of 2691097 in words is "two million, six hundred ninety-one thousand, ninety-seven".