894581 has 2 divisors, whose sum is σ = 894582. Its totient is φ = 894580.

The previous prime is 894559. The next prime is 894589. The reversal of 894581 is 185498.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 654481 + 240100 = 809^2 + 490^2 .

It is a cyclic number.

It is not a de Polignac number, because 894581 - 2¹⁴ = 878197 is a prime.

It is a super-2 number, since 2×894581² = 1600550331122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 894581.

It is not a weakly prime, because it can be changed into another prime (894589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447290 + 447291.

It is an arithmetic number, because the mean of its divisors is an integer number (447291).

2⁸⁹⁴⁵⁸¹ is an apocalyptic number.

It is an amenable number.

894581 is a deficient number, since it is larger than the sum of its proper divisors (1).

894581 is an equidigital number, since it uses as much as digits as its factorization.

894581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 35.

The square root of 894581 is about 945.8229221160. The cubic root of 894581 is about 96.3547709408.

The spelling of 894581 in words is "eight hundred ninety-four thousand, five hundred eighty-one".