90077717 has 2 divisors, whose sum is σ = 90077718. Its totient is φ = 90077716.

The previous prime is 90077711. The next prime is 90077731. The reversal of 90077717 is 71777009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89889361 + 188356 = 9481^2 + 434^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90077717 is a prime.

It is a super-2 number, since 2×90077717² = 16227990199864178, 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 (90077711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45038858 + 45038859.

It is an arithmetic number, because the mean of its divisors is an integer number (45038859).

Almost surely, 2^90077717 is an apocalyptic number.

It is an amenable number.

90077717 is a deficient number, since it is larger than the sum of its proper divisors (1).

90077717 is an equidigital number, since it uses as much as digits as its factorization.

90077717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21609, while the sum is 38.

The square root of 90077717 is about 9490.9281421787. The cubic root of 90077717 is about 448.2694306302.

The spelling of 90077717 in words is "ninety million, seventy-seven thousand, seven hundred seventeen".