897785 has 16 divisors (see below), whose sum is σ = 1247616. Its totient is φ = 607488.

The previous prime is 897781. The next prime is 897817. The reversal of 897785 is 587798.

It is not a de Polignac number, because 897785 - 2² = 897781 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (897781) 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, 3842 + ... + 4068.

It is an arithmetic number, because the mean of its divisors is an integer number (77976).

2⁸⁹⁷⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

897785 is a deficient number, since it is larger than the sum of its proper divisors (349831).

897785 is a wasteful number, since it uses less digits than its factorization.

897785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352.

The product of its digits is 141120, while the sum is 44.

The square root of 897785 is about 947.5151713825. The cubic root of 897785 is about 96.4696675050.

The spelling of 897785 in words is "eight hundred ninety-seven thousand, seven hundred eighty-five".