897811 has 8 divisors (see below), whose sum is σ = 942480. Its totient is φ = 854112.

The previous prime is 897781. The next prime is 897817. The reversal of 897811 is 118798.

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

It is a cyclic number.

It is not a de Polignac number, because 897811 - 2⁵ = 897779 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897817) 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, 2221 + ... + 2593.

It is an arithmetic number, because the mean of its divisors is an integer number (117810).

2⁸⁹⁷⁸¹¹ is an apocalyptic number.

897811 is a deficient number, since it is larger than the sum of its proper divisors (44669).

897811 is a wasteful number, since it uses less digits than its factorization.

897811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485.

The product of its digits is 4032, while the sum is 34.

The square root of 897811 is about 947.5288913801. The cubic root of 897811 is about 96.4705987551.

The spelling of 897811 in words is "eight hundred ninety-seven thousand, eight hundred eleven".