897405 has 16 divisors (see below), whose sum is σ = 1486080. Its totient is φ = 461888.

The previous prime is 897401. The next prime is 897433. The reversal of 897405 is 504798.

It is a cyclic number.

It is not a de Polignac number, because 897405 - 2² = 897401 is a prime.

It is a Curzon 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 897405.

It is not an unprimeable number, because it can be changed into a prime (897401) 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 15 ways as a sum of consecutive naturals, for example, 597 + ... + 1466.

It is an arithmetic number, because the mean of its divisors is an integer number (92880).

2⁸⁹⁷⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

897405 is a deficient number, since it is larger than the sum of its proper divisors (588675).

897405 is a wasteful number, since it uses less digits than its factorization.

897405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 897405 is about 947.3146256656. The cubic root of 897405 is about 96.4560548743.

The spelling of 897405 in words is "eight hundred ninety-seven thousand, four hundred five".