2630491 has 2 divisors, whose sum is σ = 2630492. Its totient is φ = 2630490.

The previous prime is 2630489. The next prime is 2630501. The reversal of 2630491 is 1940362.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2630491 - 2¹ = 2630489 is a prime.

Together with 2630489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2630431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1315245 + 1315246.

It is an arithmetic number, because the mean of its divisors is an integer number (1315246).

2^2630491 is an apocalyptic number.

2630491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2630491 is an equidigital number, since it uses as much as digits as its factorization.

2630491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 2630491 is about 1621.8788487430. The cubic root of 2630491 is about 138.0423275606.

The spelling of 2630491 in words is "two million, six hundred thirty thousand, four hundred ninety-one".