898669 has 2 divisors, whose sum is σ = 898670. Its totient is φ = 898668.

The previous prime is 898663. The next prime is 898673. The reversal of 898669 is 966898.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 544644 + 354025 = 738^2 + 595^2 .

It is a cyclic number.

It is not a de Polignac number, because 898669 - 2³ = 898661 is a prime.

It is a super-2 number, since 2×898669² = 1615211943122, which contains 22 as substring.

It is a congruent number.

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, 449334 + 449335.

It is an arithmetic number, because the mean of its divisors is an integer number (449335).

2⁸⁹⁸⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

898669 is a deficient number, since it is larger than the sum of its proper divisors (1).

898669 is an equidigital number, since it uses as much as digits as its factorization.

898669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 46.

The square root of 898669 is about 947.9815399047. The cubic root of 898669 is about 96.5013199279.

The spelling of 898669 in words is "eight hundred ninety-eight thousand, six hundred sixty-nine".