90281677 has 2 divisors, whose sum is σ = 90281678. Its totient is φ = 90281676.

The previous prime is 90281657. The next prime is 90281687. The reversal of 90281677 is 77618209.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55636681 + 34644996 = 7459^2 + 5886^2 .

It is a cyclic number.

It is not a de Polignac number, because 90281677 - 2²³ = 81893069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90281617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45140838 + 45140839.

It is an arithmetic number, because the mean of its divisors is an integer number (45140839).

Almost surely, 2^90281677 is an apocalyptic number.

It is an amenable number.

90281677 is a deficient number, since it is larger than the sum of its proper divisors (1).

90281677 is an equidigital number, since it uses as much as digits as its factorization.

90281677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 90281677 is about 9501.6670642577. The cubic root of 90281677 is about 448.6075094811.

The spelling of 90281677 in words is "ninety million, two hundred eighty-one thousand, six hundred seventy-seven".