2701661 has 2 divisors, whose sum is σ = 2701662. Its totient is φ = 2701660.

The previous prime is 2701637. The next prime is 2701663. The reversal of 2701661 is 1661072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2592100 + 109561 = 1610^2 + 331^2 .

It is a cyclic number.

It is not a de Polignac number, because 2701661 - 2⁶ = 2701597 is a prime.

It is a Sophie Germain prime.

Together with 2701663, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2701663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1350830 + 1350831.

It is an arithmetic number, because the mean of its divisors is an integer number (1350831).

2^2701661 is an apocalyptic number.

It is an amenable number.

2701661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2701661 is an equidigital number, since it uses as much as digits as its factorization.

2701661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 2701661 is about 1643.6730210112. The cubic root of 2701661 is about 139.2762135218.

The spelling of 2701661 in words is "two million, seven hundred one thousand, six hundred sixty-one".