890217 has 8 divisors (see below), whose sum is σ = 1318880. Its totient is φ = 593460.

The previous prime is 890177. The next prime is 890221. The reversal of 890217 is 712098.

It is not a de Polignac number, because 890217 - 2¹⁹ = 365929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 32971 = 890217 / (8 + 9 + 0 + 2 + 1 + 7).

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 890217.

It is not an unprimeable number, because it can be changed into a prime (890237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16459 + ... + 16512.

It is an arithmetic number, because the mean of its divisors is an integer number (164860).

2⁸⁹⁰²¹⁷ is an apocalyptic number.

It is an amenable number.

890217 is a deficient number, since it is larger than the sum of its proper divisors (428663).

890217 is a wasteful number, since it uses less digits than its factorization.

890217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32980 (or 32974 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 890217 is about 943.5131159661. The cubic root of 890217 is about 96.1978342160.

The spelling of 890217 in words is "eight hundred ninety thousand, two hundred seventeen".