905668 has 12 divisors (see below), whose sum is σ = 1592892. Its totient is φ = 450560.

The previous prime is 905659. The next prime is 905677. The reversal of 905668 is 866509.

905668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (905659) and next prime (905677).

It can be written as a sum of positive squares in 2 ways, for example, as 589824 + 315844 = 768^2 + 562^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588 + ... + 1468.

It is an arithmetic number, because the mean of its divisors is an integer number (132741).

2⁹⁰⁵⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

905668 is a deficient number, since it is larger than the sum of its proper divisors (687224).

905668 is a wasteful number, since it uses less digits than its factorization.

905668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142 (or 1140 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 905668 is about 951.6659077639. The cubic root of 905668 is about 96.7511957155.

The spelling of 905668 in words is "nine hundred five thousand, six hundred sixty-eight".