2606990473 has 2 divisors, whose sum is σ = 2606990474. Its totient is φ = 2606990472.

The previous prime is 2606990471. The next prime is 2606990531. The reversal of 2606990473 is 3740996062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2471780089 + 135210384 = 49717^2 + 11628^2 .

It is a cyclic number.

It is not a de Polignac number, because 2606990473 - 2¹ = 2606990471 is a prime.

Together with 2606990471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2606990471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1303495236 + 1303495237.

It is an arithmetic number, because the mean of its divisors is an integer number (1303495237).

Almost surely, 2^2606990473 is an apocalyptic number.

It is an amenable number.

2606990473 is a deficient number, since it is larger than the sum of its proper divisors (1).

2606990473 is an equidigital number, since it uses as much as digits as its factorization.

2606990473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 46.

The square root of 2606990473 is about 51058.6963503770. The cubic root of 2606990473 is about 1376.3001209046.

The spelling of 2606990473 in words is "two billion, six hundred six million, nine hundred ninety thousand, four hundred seventy-three".