898621 has 2 divisors, whose sum is σ = 898622. Its totient is φ = 898620.

The previous prime is 898613. The next prime is 898661. The reversal of 898621 is 126898.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 881721 + 16900 = 939^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 898621 - 2³ = 898613 is a prime.

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 898621.

It is not a weakly prime, because it can be changed into another prime (898661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449310 + 449311.

It is an arithmetic number, because the mean of its divisors is an integer number (449311).

2⁸⁹⁸⁶²¹ is an apocalyptic number.

It is an amenable number.

898621 is a deficient number, since it is larger than the sum of its proper divisors (1).

898621 is an equidigital number, since it uses as much as digits as its factorization.

898621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 34.

The square root of 898621 is about 947.9562226179. The cubic root of 898621 is about 96.4996017774.

The spelling of 898621 in words is "eight hundred ninety-eight thousand, six hundred twenty-one".