2626691 has 2 divisors, whose sum is σ = 2626692. Its totient is φ = 2626690.

The previous prime is 2626649. The next prime is 2626699. The reversal of 2626691 is 1966262.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2626691 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2626699) 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, 1313345 + 1313346.

It is an arithmetic number, because the mean of its divisors is an integer number (1313346).

2^2626691 is an apocalyptic number.

2626691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2626691 is an equidigital number, since it uses as much as digits as its factorization.

2626691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 2626691 is about 1620.7069445153. The cubic root of 2626691 is about 137.9758236721.

The spelling of 2626691 in words is "two million, six hundred twenty-six thousand, six hundred ninety-one".