897211 has 4 divisors (see below), whose sum is σ = 1025392. Its totient is φ = 769032.

The previous prime is 897191. The next prime is 897223. The reversal of 897211 is 112798.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-897211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 897211.

It is not an unprimeable number, because it can be changed into a prime (897241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64080 + ... + 64093.

It is an arithmetic number, because the mean of its divisors is an integer number (256348).

2⁸⁹⁷²¹¹ is an apocalyptic number.

897211 is a deficient number, since it is larger than the sum of its proper divisors (128181).

897211 is a wasteful number, since it uses less digits than its factorization.

897211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128180.

The product of its digits is 1008, while the sum is 28.

The square root of 897211 is about 947.2122254279. The cubic root of 897211 is about 96.4491037864.

The spelling of 897211 in words is "eight hundred ninety-seven thousand, two hundred eleven".