90206741 has 2 divisors, whose sum is σ = 90206742. Its totient is φ = 90206740.

The previous prime is 90206663. The next prime is 90206749. The reversal of 90206741 is 14760209.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86676100 + 3530641 = 9310^2 + 1879^2 .

It is a cyclic number.

It is not a de Polignac number, because 90206741 - 2¹⁴ = 90190357 is a prime.

It is a super-2 number, since 2×90206741² = 16274512243682162, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90206749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45103370 + 45103371.

It is an arithmetic number, because the mean of its divisors is an integer number (45103371).

Almost surely, 2^90206741 is an apocalyptic number.

It is an amenable number.

90206741 is a deficient number, since it is larger than the sum of its proper divisors (1).

90206741 is an equidigital number, since it uses as much as digits as its factorization.

90206741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 90206741 is about 9497.7229376309. The cubic root of 90206741 is about 448.4833567232.

The spelling of 90206741 in words is "ninety million, two hundred six thousand, seven hundred forty-one".