2596661 has 2 divisors, whose sum is σ = 2596662. Its totient is φ = 2596660.

The previous prime is 2596639. The next prime is 2596663. The reversal of 2596661 is 1666952.

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., 1874161 + 722500 = 1369^2 + 850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2596661 is a prime.

Together with 2596663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2596663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1298330 + 1298331.

It is an arithmetic number, because the mean of its divisors is an integer number (1298331).

2^2596661 is an apocalyptic number.

It is an amenable number.

2596661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2596661 is an equidigital number, since it uses as much as digits as its factorization.

2596661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 35.

The square root of 2596661 is about 1611.4158370824. The cubic root of 2596661 is about 137.4479979663.

The spelling of 2596661 in words is "two million, five hundred ninety-six thousand, six hundred sixty-one".