897823 has 4 divisors (see below), whose sum is σ = 901408. Its totient is φ = 894240.

The previous prime is 897817. The next prime is 897829. The reversal of 897823 is 328798.

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

It is an interprime number because it is at equal distance from previous prime (897817) and next prime (897829).

It is a cyclic number.

It is not a de Polignac number, because 897823 - 2¹³ = 889631 is a prime.

It is a super-2 number, since 2×897823² = 1612172278658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897829) 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 in 3 ways as a sum of consecutive naturals, for example, 1386 + ... + 1927.

It is an arithmetic number, because the mean of its divisors is an integer number (225352).

2⁸⁹⁷⁸²³ is an apocalyptic number.

897823 is a deficient number, since it is larger than the sum of its proper divisors (3585).

897823 is a wasteful number, since it uses less digits than its factorization.

897823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3584.

The product of its digits is 24192, while the sum is 37.

The square root of 897823 is about 947.5352236197. The cubic root of 897823 is about 96.4710285568.

The spelling of 897823 in words is "eight hundred ninety-seven thousand, eight hundred twenty-three".