2630891 has 2 divisors, whose sum is σ = 2630892. Its totient is φ = 2630890.

The previous prime is 2630879. The next prime is 2630917. The reversal of 2630891 is 1980362.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2630891 - 2¹⁰ = 2629867 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2¹¹ + 6 + 3⁵ + 0 + 8⁷ + 9⁶ + 1 .

It is not a weakly prime, because it can be changed into another prime (2630861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1315445 + 1315446.

It is an arithmetic number, because the mean of its divisors is an integer number (1315446).

2^2630891 is an apocalyptic number.

2630891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2630891 is an equidigital number, since it uses as much as digits as its factorization.

2630891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 2630891 is about 1622.0021578284. The cubic root of 2630891 is about 138.0493242433.

The spelling of 2630891 in words is "two million, six hundred thirty thousand, eight hundred ninety-one".