897891 has 8 divisors (see below), whose sum is σ = 1204224. Its totient is φ = 595080.

The previous prime is 897887. The next prime is 897899. The reversal of 897891 is 198798.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 897891 - 2² = 897887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211 + ... + 1356.

It is an arithmetic number, because the mean of its divisors is an integer number (150528).

2⁸⁹⁷⁸⁹¹ is an apocalyptic number.

897891 is a deficient number, since it is larger than the sum of its proper divisors (306333).

897891 is a wasteful number, since it uses less digits than its factorization.

897891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761.

The product of its digits is 36288, while the sum is 42.

The square root of 897891 is about 947.5711055113. The cubic root of 897891 is about 96.4734640273.

The spelling of 897891 in words is "eight hundred ninety-seven thousand, eight hundred ninety-one".