897917 has 4 divisors (see below), whose sum is σ = 900480. Its totient is φ = 895356.

The previous prime is 897907. The next prime is 897931. The reversal of 897917 is 719798.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 897917 - 2¹² = 893821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 897917.

It is not an unprimeable number, because it can be changed into a prime (897907) 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, 653 + ... + 1490.

It is an arithmetic number, because the mean of its divisors is an integer number (225120).

2⁸⁹⁷⁹¹⁷ is an apocalyptic number.

It is an amenable number.

897917 is a deficient number, since it is larger than the sum of its proper divisors (2563).

897917 is a wasteful number, since it uses less digits than its factorization.

897917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562.

The product of its digits is 31752, while the sum is 41.

The square root of 897917 is about 947.5848246991. The cubic root of 897917 is about 96.4743952041.

It can be divided in two parts, 89791 and 7, that added together give a palindrome (89798).

The spelling of 897917 in words is "eight hundred ninety-seven thousand, nine hundred seventeen".