90666371 has 2 divisors, whose sum is σ = 90666372. Its totient is φ = 90666370.

The previous prime is 90666349. The next prime is 90666377. The reversal of 90666371 is 17366609.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90666371 - 2⁶ = 90666307 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90666377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45333185 + 45333186.

It is an arithmetic number, because the mean of its divisors is an integer number (45333186).

Almost surely, 2^90666371 is an apocalyptic number.

90666371 is a deficient number, since it is larger than the sum of its proper divisors (1).

90666371 is an equidigital number, since it uses as much as digits as its factorization.

90666371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 90666371 is about 9521.8890457724. The cubic root of 90666371 is about 449.2437850536.

The spelling of 90666371 in words is "ninety million, six hundred sixty-six thousand, three hundred seventy-one".