897091585 has 32 divisors (see below), whose sum is σ = 1211696640. Its totient is φ = 633201408.

The previous prime is 897091583. The next prime is 897091607. The reversal of 897091585 is 585190798.

It is a cyclic number.

It is not a de Polignac number, because 897091585 - 2¹ = 897091583 is a prime.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (897091583) 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 31 ways as a sum of consecutive naturals, for example, 127951 + ... + 134779.

It is an arithmetic number, because the mean of its divisors is an integer number (37865520).

Almost surely, 2^897091585 is an apocalyptic number.

It is an amenable number.

897091585 is a deficient number, since it is larger than the sum of its proper divisors (314605055).

897091585 is a wasteful number, since it uses less digits than its factorization.

897091585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6937.

The product of its (nonzero) digits is 907200, while the sum is 52.

The square root of 897091585 is about 29951.4871917907. The cubic root of 897091585 is about 964.4482460688.

The spelling of 897091585 in words is "eight hundred ninety-seven million, ninety-one thousand, five hundred eighty-five".