897764 has 12 divisors (see below), whose sum is σ = 1795584. Its totient is φ = 384744.

The previous prime is 897751. The next prime is 897779. The reversal of 897764 is 467798.

897764 is an admirable number.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 897764.

It is an unprimeable number.

897764 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 16004 + ... + 16059.

It is an arithmetic number, because the mean of its divisors is an integer number (149632).

2⁸⁹⁷⁷⁶⁴ is an apocalyptic number.

It is an amenable number.

897764 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

897764 is a wasteful number, since it uses less digits than its factorization.

897764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32074 (or 32072 counting only the distinct ones).

The product of its digits is 84672, while the sum is 41.

The square root of 897764 is about 947.5040897009. The cubic root of 897764 is about 96.4689153283.

It can be divided in two parts, 897 and 764, that added together give a palindrome (1661).

The spelling of 897764 in words is "eight hundred ninety-seven thousand, seven hundred sixty-four".