290666771 has 2 divisors, whose sum is σ = 290666772. Its totient is φ = 290666770.

The previous prime is 290666767. The next prime is 290666773. The reversal of 290666771 is 177666092.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 290666771 - 2² = 290666767 is a prime.

Together with 290666773, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (290666773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145333385 + 145333386.

It is an arithmetic number, because the mean of its divisors is an integer number (145333386).

Almost surely, 2^290666771 is an apocalyptic number.

290666771 is a deficient number, since it is larger than the sum of its proper divisors (1).

290666771 is an equidigital number, since it uses as much as digits as its factorization.

290666771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 290666771 is about 17048.9521965428. The cubic root of 290666771 is about 662.4174970715.

The spelling of 290666771 in words is "two hundred ninety million, six hundred sixty-six thousand, seven hundred seventy-one".