906881 has 2 divisors, whose sum is σ = 906882. Its totient is φ = 906880.

The previous prime is 906869. The next prime is 906901. The reversal of 906881 is 188609.

906881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 739600 + 167281 = 860^2 + 409^2 .

It is an emirp because it is prime and its reverse (188609) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 906881 - 2⁶ = 906817 is a prime.

It is a super-2 number, since 2×906881² = 1644866296322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (906481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 453440 + 453441.

It is an arithmetic number, because the mean of its divisors is an integer number (453441).

2⁹⁰⁶⁸⁸¹ is an apocalyptic number.

It is an amenable number.

906881 is a deficient number, since it is larger than the sum of its proper divisors (1).

906881 is an equidigital number, since it uses as much as digits as its factorization.

906881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 906881 is about 952.3029980001. The cubic root of 906881 is about 96.7943707880.

The spelling of 906881 in words is "nine hundred six thousand, eight hundred eighty-one".