90771671 has 2 divisors, whose sum is σ = 90771672. Its totient is φ = 90771670.

The previous prime is 90771649. The next prime is 90771691. The reversal of 90771671 is 17617709.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90771671 is a prime.

It is a super-2 number, since 2×90771671² = 16478992512264482, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90771601) 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, 45385835 + 45385836.

It is an arithmetic number, because the mean of its divisors is an integer number (45385836).

Almost surely, 2^90771671 is an apocalyptic number.

90771671 is a deficient number, since it is larger than the sum of its proper divisors (1).

90771671 is an equidigital number, since it uses as much as digits as its factorization.

90771671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18522, while the sum is 38.

The square root of 90771671 is about 9527.4168062492. The cubic root of 90771671 is about 449.4176351384.

The spelling of 90771671 in words is "ninety million, seven hundred seventy-one thousand, six hundred seventy-one".